If a China Merchants Bank credit card has been opened and taken away by a bank employee, you should immediately notify the bank and call the police. Immediately call the bank's customer service number to report the situation, ask the bank to take measures to prevent the use of the card, ask the bank to call the police, report the case to the local public security agency, and apply for investigation. Issue a written report to the bank, requesting the bank to compensate for losses and change bank account numbers as soon as possible to prevent information leakage. A credit card, also called a credit card, is a credit certificate issued by a commercial bank or credit card company to consumers with qualified credit.