Hello, credit card refund details can be inquired in the following ways (the refund details are negative amounts): 1. For online banking inquiry, log in to the online banking popular edition/professional edition, and click Account Management-Bill Inquiry or Bill Inquiry. Please click:/cmbbank _ genshell/ui/genshellpc/login/login.aspx? FJID = VReeRQ:qI8M _； 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".