How to Block Your Bank Card Fast in Vietnam: 24/7 Hotlines

💡 If your bank card is lost or stolen in Vietnam, call your bank's 24/7 hotline right away: Vietcombank 1900 545413, BIDV 1900 9247, Techcombank 1800 588 822 (toll-free). Faster still: lock the card yourself in your banking app before dialling. Do both. Then get a stamped police report from the local ward station for any insurance claim.

What is the fastest way to block a card in Vietnam?

Your banking app is faster than any phone call. Open the app, find card management, and tap "Lock" or "Temporarily block". The change is instant, works at any hour, and does not require navigating a phone menu. If you see unfamiliar transactions, screenshot them before locking so you have a record for the dispute.

If you do not have the app or cannot log in, call the 24/7 hotline from the list below. Both steps can be done in under five minutes.

24/7 hotlines for major Vietnamese banks

The following numbers were confirmed from official bank pages in September 2026. Verify at your bank's own website before acting, as hotlines do change.

• Vietcombank (VCB): 1900 545413 (personal banking line). Vietcombank's FAQ also states that cardholders can lock their card by sending a message to 6167 from their registered mobile number. Priority customers: 1800 1565 (toll-free).
• BIDV: 1900 9247 inside Vietnam, or +84 24 2220 0588 from abroad. BIDV's official contact page explicitly lists card locking as a service on this 24/7 line.
• Techcombank: 1800 588 822 (toll-free inside Vietnam), or +84 24 3944 6699 from abroad. This is Techcombank's confirmed personal banking line from the official help page.
• VPBank: published banking guides list 1900 545415, but this number was not verified directly from vpbank.com.vn during this run. Confirm at the official VPBank website before relying on it.
• All other banks (MB Bank, ACB, Agribank, Sacombank): the 24/7 number is on the back of your card or on the bank's official website. All major Vietnamese banks operate a 24/7 customer service line.

If the phone queue is long, walk into any nearby branch and ask staff to block the card in person. Bring your passport as identification.

What if my card was issued outside Vietnam?

If you brought your card from home, Vietnamese bank hotlines cannot help. Call the international emergency number printed on the back of your card instead. If the card is gone and you do not have that number saved, the main card networks offer global assistance lines:

• Visa global assistance: +1 303 967 1096
• Mastercard global services: +1 636 722 7111

These network lines will route you to your issuing bank or flag the card network-wide. The U.S. Embassy in Vietnam advises all travellers to keep emergency contact numbers for their bank and card provider before arrival.

Should you file a police report after card fraud?

Yes, if money was taken or if you plan to make a travel insurance claim. Go to the ward police station (cong an phuong) for the area where you are staying. Bring your passport and any evidence: a bank SMS alert, an ATM receipt, or a screenshot of suspicious transactions.

Ask for a stamped copy of the report for your records. Expect a language barrier at a local station; asking your hotel's front desk staff to accompany you or help explain the key facts is a practical solution. The Da Nang Visitor Center at 108 Bach Dang, phone 0236 3 550 111, can also direct you to the right station if you are unsure.

A full step-by-step guide, including which documents to collect, is on the stolen card and fraud guide at the Da Nang Help centre.

Five habits that cut your card fraud risk in Vietnam

• Use ATMs inside bank lobbies or attached to large hotels, not freestanding kiosks on the street.
• Shield the keypad with your free hand when entering your PIN.
• If the ATM offers to charge you in your home currency, decline and choose Vietnamese dong instead to avoid inflated exchange rates.
• Turn on real-time SMS or push-notification alerts for every transaction in your banking app.
• Set a low daily ATM withdrawal limit and raise it only when you need a larger amount.

FAQ

Can I block a Vietnamese bank card from abroad?

Yes. Use the banking app from anywhere, or call the international number: BIDV +84 24 2220 0588, Techcombank +84 24 3944 6699. Have your card or account number ready for the verification step.

Will I get fraudulent charges reversed?

This depends on your bank and the circumstances. Report as quickly as possible and keep all evidence: the police report, bank SMS alerts, and the case number your bank gives you. Dispute resolution timelines vary and no specific outcome can be assured. Ask your bank specifically about its dispute or chargeback process.

Is a police report always required for a travel insurance claim?

Most travel insurers require a police report for theft or fraud claims above a small threshold. Obtain one even if you are not yet sure whether you will claim: it is much harder to get days after the incident than on the day it happens.

An ATM kept my card instead of fraud. What do I do?

Call the bank that owns the ATM immediately: the hotline is printed on the machine. Report the card as retained by the machine, not stolen. Bring your passport to the branch; you will likely need to visit in person to have the card returned or destroyed and replaced.

Where can I find more help for foreigners in Da Nang and Central Vietnam?

The stolen card and fraud guide on the Da Nang Help centre covers which documents to collect and what to report. For all other common situations - from lost passports to hospital interpreters - visit the Da Nang Help centre.

Official sources

• Vietcombank, customer service contact page: confirmed 1900 545413 as the 24/7 personal banking hotline. Verified September 2026.
• BIDV, personal banking contact page: confirmed 1900 9247 and +84 24 2220 0588 as the 24/7 card-locking and customer service line. Verified September 2026.
• Techcombank, help and support page: confirmed 1800 588 822 (toll-free) as the personal banking hotline. Verified September 2026.
• U.S. Embassy in Vietnam, safety and security advice: official guidance for travellers in Vietnam on staying safe and protecting finances. Verified September 2026.