If it is not stipulated in the contract, then the bank can't automatically deduct money. According to the law, you can't seal up your deposit account in the same bank without permission.
It is also impossible to inform other banks to close your account.
Otherwise, you will bear legal responsibility.
However, if the bank sues you for failing to repay the loan through the court, and the court decides that you lose the case, but you fail to repay the loan in person, the bank can apply to the court to enforce the funds in your account.
In short, without the support of the judicial department, the bank can't forcibly deduct the deposit in your account.