To change your credit card on file, please visit this link on your Apple device or computer with iTunes: https://buy.itunes.apple.com/WebObjects/MZFinance.woa/wa/accountSummary
From there, tap "Payment Information" to change your current payment information.
For more details, please visit: http://support.apple.com/en-us/HT1918
Any questions?
Please, send a message to our Support Team by clicking here!