When using a deposit and withdrawal machine, the biggest fear is encountering situations where "money has been deducted but not withdrawn" or "money has been deposited but the balance has not changed". Although this type of transaction anomaly is not common, it can indeed cause anxiety once encountered. The following are several typical abnormal situations and their causes.

Scenario 1: Withdrawal successfully deducted but no cash was issued

This is the most difficult problem. The reason is usually due to foreign objects getting stuck in the cash dispensing slot or internal mechanical failure of the machine. If you confirm that money has been deducted but have not received cash, keep the transaction receipt as soon as possible and call customer service to report the issue. Generally, after verification, the funds will be returned to the account within 1-3 working days.

Scenario 2: Balance not updated after deposit

Cash deposits are usually received instantly, but if you deposit by check or through transfer, there may be a delay in the arrival time. If the balance remains unchanged after depositing cash, it may be due to an error in the machine's recognition of banknotes. It is recommended to keep the receipt and contact customer service for verification.

Scenario 3: A message saying 'Communication failure' appears during the transaction

This indicates that the network connection between the machine and the banking system has been interrupted. Don't panic at this moment, money won't disappear out of thin air. Wait a few minutes and try again. If the problem persists, you can switch to a different machine or go to the branch to handle it.

Scenario 4: The withdrawal amount does not match the actual amount

Sometimes machines may spit out more or less money. If taken excessively, it constitutes unjust enrichment and the bank has the right to recover it; If you have taken less, keep the receipt to apply for compensation.

Key reminder: Regardless of the type of abnormality, the transaction receipt is the only proof of rights protection. Be sure to wait until the receipt is printed before leaving during operation.