your itunes account has been disabled
Dear,
I understand that you are concerned about why your account was disabled.
The account was disabled because the card holder whose card purchased the iTunes Gift Certificates redeemed to your account has refuted the charges with his or her credit card company. The buyer will need to contact the credit card company to discuss the disputed purchase.
Please note that because your account was disabled, you will lose the ability to update applications purchased with this account.
For information about Apple's right to close customer accounts, please see the iTunes Store Terms of Sale:
http://www.apple.com/legal/itunes/us/terms.html
You will still be able to play all of the items that were purchased with that account, and you may certainly continue to purchase from the iTunes Store by creating a new account.
I apologize for any inconvenience.
iPhone 5, iOS 6.1.3