I deposited 6,543,800 yuan in the bank on a regular basis, and then the balance was 300 yuan, but I deducted the text message a few days later. How did I get another 100 yuan? This is ...

This may be the annual fee deducted by the bank or something.

You don't need a password to deduct money from the bank, but the bank doesn't just deduct money. Unless some kind of agreement is reached in advance or an agreement is signed. This card of yours is a special card for you to pay tuition fees. Deduction will only deduct your card account.

China Bank has a variety of batch deduction services: withholding and remitting utilities, social security fees, pension fees, tuition fees, housing accumulation fund, etc. It depends on what similar withholding agreement is signed between the account and the bank, or directly. Some banks will deduct money from the second batch. If the lender fails to make up the difference, it will be overdue. Generally speaking, the bank will inform the lender of the last time in the early notice of repayment SMS.