How to remove a credit card from xbox live account?

used my sister credit card to by stuff. Now they charge every month and she wants it removed. can i remove it and by those monthly refills or should i just cancel the account?
How to remove a credit card from xbox live account?
You can call 1-800-4MY-XBOX





They can cancel it for you.





You can then purchase a refill card at your local electronic store.
Reply:unfortunately, you can't right now, but i've heard that the next update would have the privilege to remove the details.





For now, call the Xbox Customer Service about your problem and they should deal with this for you