Is it normal for the Postal Savings Bank to deduct it twice a month?

Maybe it was a mistake to deduct the fee. You can go to the bank for consultation if you have any questions.

Once a month or once a year. The bank card of the Postal Savings Bank will be charged at the beginning of each month for SMS reminder service, and the annual fee will be charged after the expiration, and it will not be charged at other times. Moreover, if you don't want to use the SMS reminder service, you can cancel it at the Postal Savings Bank.

Once a month or once a year. The bank card of the Postal Savings Bank will be charged at the beginning of each month for SMS reminder service, and the annual fee will be charged after the expiration, and it will not be charged at other times. Moreover, if you don't want to use the SMS reminder service, you can cancel it at the Postal Savings Bank.