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If you want to change the CC of your Apple ID, then follow the steps below. You have to do this from your computer.
First download and install latest iTunes from here --> http://www.apple.com/itunes/download/
Refer this article --> https://support.apple.com/en-in/HT201266
Change the card info in there. Please let me know if you have any difficulty on following the steps above and I will continue to help you.