the only way is to call Xbox's help line. Just as a warning though, Cancel your account means delete it, just tell them that you want to downgrade to a silver account at the time of the next payment instead of recurring payment.
they will try almost ANYTHING to keep you on though, so be ready.
Google it first please :D
IMPROVEMENT:
If you have a PC, you can remove your credit card information yourself. First, get Microsoft Live Games for PC. Then, download Tinker (a Free for PC game for the Live network). When installing the game, make sure you use the same account you used for your XBox 360 to activate Tinker.
Now, go to your account settings. You can change or even delete your credit card information there. It will not affect any of you XBox Live settings, or Xbox 360 Gold subscription, it only removes you credit card information.
go on to your live account and click edit details or whatever. Then delete the credit card details from the box. They now no longer have your credit card details
you have to call 1800 my xbox
Call the credit card companies and tell them that you want her removed as an authorized user from your card.
that's what u get for using a super cool xbox
All you have to do is create the account and it automatically becomes what is call an Xbox Live Silver Account. You don't need any credit card or subscription card.
U can use a credit card or buy a Xbox live membership card
i believe you have one of two options: 1. create a new xbox live gamertag 2. call support and update the information onyour account to correspond with the new credit card.
Go to Xbox.com or call 1-800-4MY-XBOX and take your credit card information off the xbox or just take the xbox's power chord away and ground him or her
You should call the credit card company.
Maybe your credit card isnt compatible with Xbox live? Check all information to see if you inputted the correct information,
How do I remove false chages from my debit card?
You can't MAKE a credit card company reopen an account. You can call the credit bureau and request that they change the status to indicate that is was closed by you and not the credit grantor. Or, you can simply put a notation in your credit report stating that the account was closed by you and not the card company.
buy a prepaid card or use a credit card