iTunes
Q: Update Card
iTunes keeps declining my card when I try to update the information even though I have double checked and all of the information I put in is correct. How do I update my card information so I can continue to make purchases?
Posted on Jun 20, 2016 2:49 PM
by FoxFifth,Apple recommended
iPhone
See the following from Change or remove your Apple ID payment information - Apple Support
If you need help changing your payment information, credit card details, or billing information, contact iTunes Store support
(Click the "iTunes Store support" link above)
Posted on Jun 20, 2016 4:09 PM