If China Merchants Bank uses a credit card, the details of the credit card refund can be queried in the following ways (the details of the refund are negative amounts): 1. Online banking inquiry, log in to Volkswagen/Professional Online Banking, and click Account Management-Bill Inquiry or Bill Inquiry. Please click: log in to online banking. 2. Self-service voice inquiry: Call the credit card customer service hotline to verify your identity, press 1, and then press 5 to enter the "Details of Bills and Transactions in the Last Year". Or press 1 and then press 3 to enter "Unbilled".