If you are in doubt, the bank will go to the mobile company to retrieve the original signature file when you swipe your card to verify whether it is your original signature. But the transfer documents will charge you, and the specific amount varies from bank to bank.

If you find that it is not your signature, insist on checking it clearly. The bank can report the case and ask the police to call up the original video of the mobile business hall at that time, so that you can see who took your credit card to spend.

Or you can check those under 500, adding up to 1000 yuan.