1. Counter of China Merchants Bank: The applicant can bring his/her valid ID card to the counter of the nearby business outlet of China Merchants Bank and ask the staff to cancel the card application.

2. China Merchants Customer Service Hotline: Applicants can call China Merchants Bank's credit card customer service hotline, switch to manual service, and ask the staff to cancel the card business.

3. Bank official website: The applicant logs into China Merchants Bank official website, enters the credit card application page, and handles the card refund business according to the page prompts.

4. Mobile banking: the applicant opens the mobile app of China Merchants Bank, enters the credit card application page, and handles the card refund business according to the page prompts.