If the amount is huge, the bank will sue for repayment, if not, the court will force repayment.
If you pay by credit card in installments, the bank will charge a late fee, so more and more money needs to be paid back.
If it reaches a certain limit, notify the card owner. If you still owe money, you will inform your family and friends, and then call the police to sue.
Legal basis: Article 67 1 of the Civil Code of People's Republic of China (PRC). If the lender fails to provide the loan according to the agreed date and amount, thus causing losses to the borrower, it shall compensate for the losses.
If the borrower fails to collect the loan according to the agreed date and amount, it shall pay interest according to the agreed date and amount.