Credit card billing address change method is as follows:
Telephone application for modification: it can be modified after customer service checks and confirms the identity;
Online banking modification: you can log in to the credit card official website to modify it yourself;
Some banks can also modify the billing address on WeChat official account: for example, China Merchants Bank credit card can select "I want" on WeChat official account, and then choose to modify personal information and modify the billing address.
If you have any other questions, I suggest you call the customer service staff of the bank, hoping to help you.