Why did Anhui's postal savings bank card lose more than ten yuan in 34 hours when no one used it?

Hello, Postal Savings Bank charges 3 yuan small account management fee for RMB current deposit account with quarterly average daily account balance less than 100 yuan; Short message notification service charges for current account changes, 3 yuan every month and 30 yuan every year; It is recommended to check the account details, which are explained in the transaction summary; I hope I can help you.