It is best not to fill in unmarried as married, which belongs to information fraud. Once discovered by the bank, it will have the following consequences:

1. The bank will cancel your credit card after discovering that the credit card application materials contain false elements, even if you have started using it.

2. The bank conducts telephone authentication and reviews information when handling the card. If it is found to be false, your application will be rejected directly, and it may be more difficult to apply in this bank in the future.