At that time, you just drew an irregular signature. You can call the issuing bank to adjust the bill.
3. Keep the evidence of borrowing money, such as the short message record between you. If it really reaches the point of war, this is the last guarantee for you to safeguard your personal interests. The money they borrowed before the divorce, this part of the debt needs to be shared by both husband and wife.
Finally, good luck and get your money back as soon as possible. It's not easy to collect debts these days.