The postal service * sent an SMS reminder, but failed to receive the SMS. Can I complain?

Depending on whose reason it is, the bank can complain. The reasons for not receiving the news from the bank may be:

1. Abnormal mobile phone status: check whether the SMS inbox is full, and verify whether the mobile phone is in arrears or has been turned off for more than 2 days.

2. Network reason: It is recommended to wait for the next transaction to observe the SMS prompt.

3. SMS expired:

4. The operator blacklists the official customer service number of the bank or there is something wrong with the mobile phone setting.

5. Transactions that are not within the short message sending range: such as bank card annual fee/small account management fee deduction, bank interest settlement, etc.

6. The transaction amount is lower than the initial sending amount set by the branch or itself.