Quick answer
When a crypto-funded VietQR payment is unclear, do not pay again immediately. Check the app transaction record, ask the merchant to verify the local receipt, preserve both references and identify whether the status is pending, failed, successful, duplicated or under refund.
The correct recovery party changes by status. The merchant, payment app, digital-asset transfer and local payment channel do not perform the same role.
| Status | Do now | Do not do |
|---|---|---|
| Pending | Check history and merchant receipt; wait for official status | Authorise the same invoice again |
| Failed with no debit | Correct one verified cause or use a backup | Repeat many times |
| Debited, merchant cannot see payment | Keep both records and contact official support | Send a separate transfer without a case |
| Duplicate | Preserve both references and contact merchant/app | Delete evidence |
| Refund | Confirm merchant initiation and monitor the stated route | Assume approval equals completed refund |
Pending means stop and verify
A local QR rail may process quickly, but the app still has its own account, conversion and status layers. Speed claims do not replace the recorded outcome.
Open transaction history, compare merchant name, VND amount and time, and ask the merchant to check. Start a second payment only after the first status is resolved.
Failed and merchant-not-received cases need different evidence
For a clear failure with no debit, check code validity, balance, limits, connectivity and risk controls once. Then use a backup if the cause remains unclear.
If the account was debited but the merchant cannot see payment, save the app reference, merchant receipt or statement, amount and time. Contact official support rather than improvising a new transfer.
Refund follows the merchant and payment channel
BKJ states that merchant refunds are initiated by the merchant. When a refund completes successfully, the associated payment fee is also returned under its published process.
Keep the original transaction and merchant refund evidence until the balance record is complete. Do not promise a fixed timeline that the official source does not provide.
What to do next
Status comes before action. One recorded payment, one merchant reference and one official support path give the best chance of resolving a problem without creating a duplicate.