I don't think anything else, that is, the loan contract does not indicate the repayment bank account number, and the debit message is also a dunning and an account. I don't know where I went and feel insecure. What if I say I haven't paid it back after many years, and there is no voucher to give me a sense of security? Instead of other banks, it is generally "how much the loan principal and interest have been recovered".