1. After losing your credit card, immediately call the 24-hour customer service hotline of the issuing bank to provide your basic information, and ask the staff to report the loss of your credit card and apply for a new one as soon as possible.

Second, bring your ID card and report the loss to the credit card department of the bank. You'd better do it yourself. The procedure will be simpler. If you need someone else to do it for you, you need to write a power of attorney and seal it.