Bookings, Costs, Cancellations, No-Shows and CBR Rules

Tolk2Go operates 24 hours a day, 7 days a week. You can place bookings online at any time.

Support is available daily. Response times may vary depending on the time and nature of your request.

Yes. Bookings can be made 24/7, including evenings, weekends, and public holidays.

Interpreter availability depends on language, location, and timing.

Select the language, date, time, location, and specialisation, then submit your request through Tolk2Go.

Each listed language pair supports interpreting in both directions. For example, Dutch–Polish covers both Dutch to Polish and Polish to Dutch.

An interpreter’s Yes, Available, or interested response is only an option for that request. It is not a booking. You confirm the interpreter through the platform before the booking becomes final.

If you sent parallel requests, you can cancel any request that has not become a booking free of charge.

On-site interpreting is available in the Netherlands, Belgium, Luxembourg, Germany, and selected regions in France.

Yes. Telephone and video interpreting are available across Europe.

For standard bookings, yes. During the booking process, you can select your preferred interpreter in the Step 4 search results. You can also start a new search from that interpreter’s profile, or choose “Book this interpreter again” from your booking history.

In each of these routes, the preferred interpreter receives the availability request first. They must still indicate availability and are only booked after the normal platform confirmation; first contact does not guarantee availability or a booking.

Exception for CBR bookings: no. CBR interpreter bookings do not follow the normal customer-choice flow.

For standard bookings, yes, but only after the booking has been confirmed and any required payment or billing approval has been completed.

Once that is done, you receive the interpreter's contact details and can contact the interpreter directly. Small practical changes that do not affect the price, you can agree together. A different date, a longer or shorter duration, or a different location goes through Request Change in the Tolk2Go app, so the price, the payment and the emails stay correct. Direct contact before confirmation is not possible.

Exception for CBR bookings: direct pre-contact between candidate and interpreter is not part of the standard process.

Submitting an interpreter request is always free of charge.

If no interpreter confirms your request, you will receive an email notification.

You may then submit a new request with a different date, time, location, language, or dialect. Availability depends on the details of the request and cannot be guaranteed.

No. When you submit a request, Tolk2Go asks one or more matching interpreters whether they are available. Under your request you see how many interpreters were asked (Requested:), how many are available (Available:) and how many are not (Not available:).

These are availability requests, not bookings. You choose one available interpreter and complete the booking yourself. You book and pay for that one interpreter only.

Interpreter availability is not shown in advance. Interpreters are asked whether they are available for the specific date and time of your request.

If several times suit you, submit a separate request for each of those times. Submitting a request costs nothing and commits you to nothing. When an interpreter is available for one of the times, select that interpreter and complete the booking. Then cancel the requests you no longer need: open them under Requested and choose Cancel Assignment.

We support 190+ languages. View all available languages here.

No. Tolk2Go offers interpreting services, which means spoken language support, not written translation services.

For written translations, we refer you to urgentvertalen.nl.

A sworn interpreter is required for Notary, Lawyer/Court, and CBR bookings. Tolk2Go automatically matches you with sworn interpreters when you select one of those specialisations.

For other specialisations, check yourself whether a sworn interpreter is required—for example with the relevant organization, Google, or another AI. If needed, use the Qualifications filter in the search results to select the relevant sworn-interpreter register.

A sworn interpreter’s status is generally tied to the country and register in which they are sworn. Sworn status in one country does not automatically mean acceptance in another. Ask the notary, court, lawyer, CBR, or other receiving authority which register or jurisdiction it accepts before booking.

No. Tolk2Go provides interpreters for spoken languages only: on site, by telephone and by video. We do not provide sign language interpreters or speech-to-text interpreters.

Professional interpreting is more affordable than you might think. Telephone interpreting starts from just €106.40 per hour, including service fee and excluding VAT. No travel costs, no travel time, and no waiting: your interpreter joins the call wherever you are.

Need an interpreter on site or by video? Interpreters set their own rates, so the price depends on the language, the date and time, the specialisation and, for on-site work, the travel. You always see the full price before you confirm, with no surprises afterwards.

Requesting an interpreter is free and doesn't commit you to anything. Start a search, compare the available interpreters and their prices, and book in under a minute.

Find your interpreter now →

Interpreters set their own hourly rates based on experience, specialisation, and availability. To see the current prices for your language, date, and type of interpreting, perform a search on Tolk2Go. You can compare the available interpreters and prices before booking; this normally takes less than one minute.

Travel costs are based on distance and travel time and are included via the interpreter's travel fee when applicable.

Interpreting, travel if applicable, service fees, and VAT. Extra work beyond the agreed scope, for example extended duration or additional preparation, is not included.

If preparation time is required, it can be billed separately. Any preparation time and cost should be agreed in advance.

Rates for sworn notary interpreters start from €280 excluding VAT, excluding travel costs, travel time, and service fees.

This base rate includes preparation and the passing of up to two deeds, for example a transfer deed and mortgage deed.

A surcharge may apply for additional deeds or extended duration.

For an exact price, submit a notary interpreter request via Tolk2Go.com. You will see the full cost before confirming.

Extra time may be charged if the assignment runs longer than booked. The interpreter is not required to stay longer than originally agreed.

You still pay the full quoted amount for the confirmed booking.

You are responsible for entering and checking all booking details yourself before confirming the booking.

This includes the correct language or languages, date, time, address, contact details, specialisation, and any notes relevant to the assignment.

For CBR bookings, this also includes the correct exam type, exam location, exam date and time, and the candidate number.

Incorrect or incomplete booking details may lead to delays, extra costs, cancellation consequences, or failure of the assignment. Tolk2Go is not responsible for booking details entered incorrectly by the customer.

Yes, you can request a different date, time or location for a booked assignment yourself. In the Tolk2Go app, go to Tasks, open the booking under Booked and choose Request Change. The interpreter accepts or rejects the change, and a change can affect the price.

If the interpreter rejects the change, your booking stays as it was. If you still need the change, or if the change option is not available for your booking, cancel the booking and submit a new request. Standard cancellation terms apply.

Small practical changes that do not affect the price, you can also agree directly with the interpreter.

For CBR exam bookings, a change request is not possible: cancel the booking and submit a new request. The CBR rules apply.

Yes. For bookings other than CBR exams, you can contact the interpreter directly once the booking is confirmed, for example about practical details. Small changes that do not affect the price, you can agree together.

A different date, a longer or shorter duration, or a different location must go through Request Change in the Tolk2Go app. Only then is the change registered, so the price, the payment and the emails stay correct. A cancellation also always goes through the Tolk2Go website or app; an informal arrangement does not release you from the cancellation terms.

For CBR exam bookings, direct contact with the interpreter is not part of the process.

You remain responsible for the address you entered. For a booked assignment, request the correct address with Request Change: in the Tolk2Go app, go to Tasks, open the booking under Booked and choose Request Change. The interpreter accepts or rejects the change, and a different location can change the price.

If the interpreter rejects the change or the change option is not available, cancel the booking and submit a new request with the correct address. Standard cancellation terms then apply. For CBR exam bookings, a change request is not possible.

Request the correct date or time with Request Change. In the Tolk2Go app, go to Tasks and open the booking under Booked, or the request under Requested if it has not been booked yet. For a booking, the interpreter accepts or rejects the change. A changed request is sent to the interpreters again.

If the change is rejected or the change option is not available, cancel the booking and submit a new request with the correct date and time. Standard cancellation terms apply. For CBR exam bookings, a change request is not possible: cancel and submit a new request under the CBR rules.

Small practical details that do not materially change the booking may usually still be updated.

Examples include entrance details, department name, room number, contact notes, or access instructions.

These practical updates do not automatically count as a cancellation.

No. Substantive booking changes are not handled informally by phone.

For security and accuracy reasons, material booking changes must go through the proper written or platform-based process.

This helps prevent errors and disputes about what was originally booked.

After a booking is confirmed, the client and assigned interpreter exchange any documents or assignment materials directly with each other. Tolk2Go does not receive, forward, store, or provide these materials.

This applies to all types of material, including preparation documents, case files, deeds, presentations, photos, identity documents, and professional cards. Each participant normally decides whether to provide requested material.

If the task description explicitly states that particular documents or materials are required, the interpreter is expected to meet that disclosed assignment requirement.

Standard rule: You can cancel free of charge up to 48 hours before the scheduled start time.

Extra rule: You also have a 2-hour cancellation window after booking.

If you cancel outside these terms, the full amount will be charged, including any travel time and travel costs where applicable.

Cancellations must be made via the website or app. Requests by phone or email are not valid cancellations.

Force majeure, such as illness, weather conditions, or travel disruptions, does not automatically exempt you from cancellation fees. The standard cancellation terms remain applicable.

These cancellation terms are shown during the booking process and repeated in confirmation emails. By completing your booking, you acknowledge and accept them.

You cancel a booking or request yourself through the Tolk2Go website or app. On the website, log in and go to My assignments. Find the booking under Requested or Booked and click Cancel Assignment. In the app, go to Tasks, open the booking and tap Cancel Assignment. Choose a reason and confirm.

Cancelling by phone or email is not valid. Whether costs apply depends on the cancellation terms for your booking.

You can request a different date, time or location for a booked assignment yourself in the Tolk2Go app or in its web version at www.tolk2go.com/customer. Go to Tasks, open the booking under Booked and choose Request Change. Enter the new details and send your change request. A different location, date or time can change the price.

The interpreter then accepts or rejects your change request. If the interpreter rejects it, your booking stays as it was. If you still need a different date or time, or if the change option is not available for your booking, cancel the booking and submit a new request. The standard cancellation terms, including the 48-hour rule, then apply.

CBR exam bookings: a change request is not possible. Cancel the booking and submit a new request. CBR bookings follow the CBR cancellation and rescheduling rules, not the standard Tolk2Go cancellation terms.

Yes. If an interpreter cancels a confirmed booking, Tolk2Go will do its best to find a replacement, but this cannot be guaranteed at the same rate or cost.

If no replacement can be arranged, you will not be charged or will receive a full refund.

Exception for CBR exam bookings: if the interpreter cancels within 72 hours before the exam start, you must submit a new interpreter request yourself via Tolk2Go.com. Tolk2Go will refund your payment in full. The applicable CBR follow-up procedure then applies.

Any concerns or complaints about the assignment must be reported within 7 days after the assignment. After this period, the assignment is considered completed and accepted.

If you are unsatisfied with the interpreter's performance, professionalism, or behaviour during the assignment, you are first expected to try to resolve the matter directly and professionally with the interpreter.

If that does not resolve the issue, or if the complaint relates to payment, scope, safety, or legal compliance, please send your complaint in writing to [email protected] within 7 days after the assignment. Include any supporting evidence such as emails, screenshots, or written confirmations.

After 7 days, the assignment is considered completed and accepted.

A complaint does not automatically result in a refund or compensation. Each complaint is reviewed individually.

If you or another required participant do not show up or are not reachable at the scheduled start time, this may be treated as a no-show.

In that case, the full booked amount may be charged.

This also applies if the interpreter is present or reachable as agreed, but the customer side is absent or unavailable.

A delay is not automatically the same as a no-show.

If you are running late, contact the interpreter directly as soon as possible after booking confirmation.

A delay does not automatically remove your payment obligations. If the assignment is still performed, the normal booking terms remain relevant.

Yes. For phone and video bookings, you must remain reachable during the full booked time window.

If you do not call, answer, connect, or otherwise participate at the scheduled start time, the booking may be treated as a no-show.

To avoid issues, test your phone, video link, or app in advance.

If the interpreter does not show up for the confirmed booking, you will not be charged or you will receive a full refund.

A simple delay is not automatically the same as a no-show. If the interpreter is only delayed, first try to contact the interpreter directly.

If the interpreter remains absent or unreachable and the assignment cannot be performed, contact Tolk2Go and report the matter within 7 days.

If the interpreter is delayed, first contact the interpreter directly using the contact details provided after the booking was confirmed.

A delay is not automatically a no-show.

If the delay affects the agreed scope or duration of the assignment, report this to Tolk2Go within 7 days after the assignment.

If the interpreter is present on location or reachable for a remote booking, the booked time still continues.

Lack of readiness on the customer side does not automatically suspend the booked time or remove payment obligations.

If the other party does not appear or remains unreachable, the normal no-show logic applies.

For customer-side no-shows, the full booked amount may still be charged.

For interpreter-side no-shows, the customer will not be charged or will receive a refund.

You always call the interpreter, at the scheduled start time, on the interpreter's phone number from your booking details. The interpreter does not call you, even if you are late: if you both call at the same time, you each get a busy signal.

You are responsible for the technical setup. Test it beforehand to avoid issues.

Tolk2Go acts as a platform connecting clients and independent freelance interpreters.

Tolk2Go's liability is limited to the direct service booked via the platform. Indirect, incidental, or consequential damages, such as loss of profit, missed appointments, or business interruption, are excluded.

Interpreters on Tolk2Go operate as independent freelance professionals. If any issue arises during the assignment, you and the interpreter are expected to first attempt to resolve the matter directly and professionally.

If direct resolution is not possible, or if the issue affects the agreed scope, payment terms, safety, or legal compliance, contact [email protected] within 7 days after the assignment.

Include any supporting evidence such as emails, screenshots, or written confirmations. After 7 days, the assignment is considered completed and accepted.

Yes. The Tolk2Go app for clients also runs in your web browser at www.tolk2go.com/customer. You use the same account and the same screens and functions as in the mobile app, without installing anything. When steps in these FAQs refer to the app, they also apply to this web version.

On the login screen of the Tolk2Go app or website, choose Forgot Password, enter the email address of your account and follow the instructions in the email you receive. Your login details are also in your welcome email.

If resetting your password does not work, contact support.

Before your appointment you receive an email with tips for your video call. It contains a Start video call button. Click it at the scheduled time; you do not need to log in.

Via iDEAL, Bancontact, Sofort, PayPal, or bank transfer.

Private customers generally pay the full amount in advance. Depending on the type of service, a deposit may apply with the remainder settled after the assignment.

CBR exam bookings: private customers always pay the full amount in advance. No deposit structure applies.

Business customers may be invoiced after an approval process. Tolk2Go may require advance payment if the company cannot be sufficiently verified, for example based on Chamber of Commerce registration, VAT number, company email, or website.

The applicable payment terms are shown during the booking process.

Companies can pay within 7 days of the invoice date.

During the invoice details confirmation step in the booking process.

A refundable amount after cancellation is refunded immediately at cancellation. Any unused refundable deposit after an assignment is refunded as soon as you confirm the completion details, after deducting any extra work. A refund via Stripe usually arrives on your account within 5 to 10 business days.

We start a refund immediately: at cancellation for a cancelled request or booking (no refund applies after a late cancellation by you), or, for any unused refundable deposit, as soon as you confirm the completion details after the assignment. A refund via Stripe usually arrives on your account within 5 to 10 business days.

Depending on the type of assignment, the amount you pay in advance can include a refundable security deposit on top of the interpreting fee. The deposit covers possible overtime or other additional costs, for example when the assignment takes longer than booked. The amount of the deposit depends on the type of assignment. CBR exam bookings have no deposit.

Any unused deposit is refunded as soon as you confirm the completion details after the assignment, after deducting any extra time. A refundable amount after cancellation is refunded immediately at cancellation. A refund via Stripe usually arrives on your account within 5 to 10 business days.

For an invoice for an individual booking, open the relevant booking in the Tolk2Go User App, edit and save the invoice details, then select Resend Invoice.

The corrected PDF is sent to the invoice email address, where it can be downloaded.

Changing account details alone may not update the invoice for an existing booking. Contact support if editing or resending does not work.

For notary bookings, the pro-forma invoice is automatically emailed as a PDF approximately ten minutes after booking confirmation.

You can also open the booking in the Tolk2Go User App, check or edit the invoice details, and select Get Invoice. The PDF is sent to the invoice email address, where it can be downloaded.

Check the spam folder and contact support if the email still does not arrive.

You can book via our homepage or via the dedicated CBR booking page.

Follow these steps:

1. Select Dutch + your own language.
2. Choose CBR as the specialisation.
3. Select the correct exam type shown in the booking flow.
4. Enter the correct location, date, and time.
5. Enter the candidate's CBR candidate number in the Reference # field.
6. Submit your request through Tolk2Go.

Your booking is only final once it has been confirmed through the platform and payment has been completed where required.

Yes. The CBR candidate number is mandatory for CBR interpreter bookings.

Please enter this number in the Reference # field during booking.

If the candidate number is missing or incorrect, this may delay the booking or make proper handling impossible.

You are responsible for entering and checking all CBR booking details yourself.

This includes the correct exam type, location, date, time, and candidate number.

Incorrect or incomplete details may lead to delays, extra costs, or failure of the interpreting service. Tolk2Go is not responsible for booking details entered incorrectly by the customer.

If your exam date, time, location, or other exam details change, you must arrange this yourself directly with CBR.

A change at CBR does not automatically change your interpreter booking with Tolk2Go.

If your CBR exam changes, you must also update or cancel your interpreter booking separately through Tolk2Go in accordance with the applicable CBR booking rules.

For CBR bookings, the standard Tolk2Go cancellation rules do not apply.

The following CBR-specific rules apply:

• More than 1 week before the exam: rescheduling is possible without interpreter cancellation costs.
• Less than 1 week before the exam: both the exam costs and interpreter costs are charged.
• No-show: both the exam costs and interpreter costs are charged.

Rescheduling your exam with CBR does not automatically reschedule your interpreter booking with Tolk2Go.

If the interpreter cancels a confirmed CBR booking within 72 hours before the exam start time, you must submit a new interpreter request via Tolk2Go.

Tolk2Go will refund your interpreter payment in full.

The applicable CBR follow-up procedure then applies.

If you are late, you must contact CBR directly.

Tolk2Go cannot change the CBR exam procedure, start time, or attendance decision.

Interpreter availability and payment consequences remain subject to the applicable CBR booking rules.

The interpreter is there only to provide neutral spoken interpretation during the exam.

The interpreter may not explain answers, coach the candidate, help with the content of the exam, or change the meaning of official terms.

Some Dutch terms must be understood by the candidate and are not translated during the exam. The official terminology lists must be studied in advance.

The interpreter attends the full CBR exam. CBR determines the exact duration.

Only the CBR exam types offered in the Tolk2Go CBR booking flow can be booked through this interpreter process.

Examples may include theory exams, driving fitness assessments, and boating licence exams.

If a practical exam type or other CBR service is not shown in the booking flow, it is not part of this standard interpreter booking process.

CBR interpreter bookings have a separate pricing structure and typically start from €238.

The final amount depends on the specific CBR booking type and the applicable booking details shown during the booking flow.

The full amount must generally be paid in advance for private CBR bookings.

Submitting a request costs nothing and commits you to nothing. We send your request straight to all interpreters who match the language and location, and you see who is available and at what price. It only becomes a booking when you confirm.

The earlier you request, the more choice and the sharper the price. Short on time? Submit an interpreter request anyway. Short notice often works too — and if it does not, it has cost you nothing.

With more than 2600+ interpreters and 190+ languages, there is a good chance someone is available, even for less common languages.

There is no fixed rate for practical exams. Interpreters set their own rates. The price depends on:

• the language
• how long the assignment takes — an LZV exam takes more interpreting time than a B exam
• the travel distance and travel time to the exam centre

You see the full all-in amount before you confirm. Travel costs, service fee and VAT are included, and nothing is added afterwards.

Rare languages, long exams and remote exam centres cost more. Requesting early gets you a better price and more choice.

Yes. For practical exams we share the interpreter's contact details after confirmation, so you can arrange practical matters directly: where and when to meet at the exam centre, which vehicle is involved, and what the candidate should bring.

You can also state a preferred interpreter in your request. They see the request first, although availability is never guaranteed.

Gladly. Driving schools, training providers and employers who regularly support non-Dutch-speaking candidates usually work with us on fixed arrangements. Get in touch and we will look at what suits you:

• Pay by invoice instead of in advance per booking, once your company details are approved.
• Regular interpreters for the languages that come up often, so you do not start with someone new each time and the interpreter knows how you work.

Contact us or e-mail [email protected] with a short outline of your situation.

No, each exam is a separate request with its own date, time, location and candidate number. Even if two candidates are at the same exam centre on the same day, these are two assignments — the interpreter can only be at one at a time.

Do submit the requests at the same time, so we can check whether the same interpreter can take several assignments that day.

Not always. The CBR puts it this way: there are not always enough seats in the vehicle, so the interpreter cannot always ride along. When booking, assume they will not.

• Car, motorcycle and car with trailer: the interpreter usually rides along, but the examiner decides whether that is necessary and workable.
• Tractor (T-rijbewijs): the interpreter never rides along — there is no room in a tractor.
• LZV: only if the vehicle has more than two seats registered on the vehicle registration.

If the interpreter does not ride along, they stay at the exam centre and are reachable by phone during the drive. They are present in person for the briefing and debriefing, and help the candidate fill in the self-reflection form.

• A valid identity document
• The exam invitation
• A blank self-reflection form
• A charged mobile phone and a phone holder for the vehicle — the connection during the drive is your responsibility if the interpreter does not ride along

Set the navigation system to the right language before the start. The interpreter does not translate navigation instructions, dashboard symbols or the radio.

The interpreter translates what the examiner says — nothing more. They are neutral and may not coach the candidate, explain the route, simplify an instruction or help with a decision.

Not translated: dashboard symbols, spoken navigation, the radio and anything else outside what the examiner says. The candidate is expected to recognise Dutch road signs as they appear in traffic.

The candidate remains responsible for the exam result.

The driving school or training provider, when the exam is booked. They record in the CBR system that the candidate is bringing an interpreter.

If it is not recorded, the examiner can refuse the interpreter and the exam goes ahead without one — or does not go ahead at all.

A booking with Tolk2Go does not automatically notify the CBR. These are two separate steps, and both must happen.

The exam itself takes as long as without an interpreter, and the CBR charges no extra exam fee for a practical exam with an interpreter.

• Truck, bus and tractor: 85 minutes
• LZV: 145 minutes, including an oral theory part

Add the briefing, the debriefing and the self-reflection form, so allow for more than just the exam time.

For car, motorcycle, moped and car-with-trailer exams, yes — if the instructor speaks both Dutch and the candidate's language and can show a valid WRM pass. Family members and acquaintances have not been allowed to act as interpreter since 1 January 2018.

If the instructor cannot interpret, or it is a different category, a sworn interpreter with a valid tolkenpas (the interpreter ID card issued by the Rbtv) is required — and that is who you book here.

Yes. After the exam the interpreter asks for a signature in the app, to confirm that the assignment took place and how long it lasted. Make sure the candidate or someone on your behalf is available for this before everyone leaves.

Practical exams have their own terms, not the standard 48-hour rule:

• More than 3 working days before the exam: cancel free of charge, full refund.
• Within 3 working days, or no-show: the full booked amount is charged, including travel costs.

Example: for an exam on Friday, cancel by Monday at the latest. Tuesday, Wednesday and Thursday are then the three working days in between.

A change of date, time or location counts as a cancellation followed by a new request.

Update the Tolk2Go booking yourself as soon as you know — the two systems are not linked, so a change at the CBR does not move the interpreter.

If you let us know more than three working days before the original date, it costs nothing. Within three working days, the original booking is charged and the new date is a new booking.

You pay nothing, or you receive a full refund of the interpreter costs; a refund via Stripe usually arrives on your account within 5 to 10 business days. We try to find a replacement interpreter, but at short notice we cannot guarantee one.

Tolk2Go's liability is limited to the interpreting service you booked through the platform. Other costs around an exam that does not go ahead — the CBR exam fee, vehicle hire, an instructor, lost lesson hours or training days — are consequential damages and fall outside it.

You may state a preference in your booking notes, for example regarding accent, gender, region, or cultural background.

However, such preferences are not guaranteed.

Availability depends on the actual interpreters available for the requested language, date, time, location, and booking type.

No. Preferences may be taken into account where possible, but they are never guaranteed.

A booking is based on interpreter availability and the normal platform process.

No. Interpreters on Tolk2Go work as independent freelance professionals.

Tolk2Go is a platform that connects customers with self-employed interpreters for spoken-language interpreting services.

The interpreter remains professionally responsible for their own preparation, planning, travel, and performance of the assignment.

Tolk2Go does not employ interpreters and does not present them as staff members or representatives in an employment relationship.

Tolk2Go remains responsible for the platform process, booking flow, and payment handling within the agreed scope.

Travel problems, parking issues, public transport delays, or similar matters remain the interpreter's own responsibility.

A delay is not automatically a no-show. If the assignment is still performed, the normal booking terms remain relevant.

If the delay affects the agreed scope or outcome, you may report this to Tolk2Go within 7 days.

Yes. Pausing cancels bookings but keeps your profile. Deleting your account removes personal data except legally required information.

No. Tolk2Go does not provide any interpreting equipment.

In some cases, an interpreter may be able to provide a whisper set or other equipment. This must be agreed in advance and may involve additional costs.

Sworn interpreters are bound by a professional duty of confidentiality.