Hi Jeff n kylie,
It sounds like you may be expereincing some issues with your ability to change your payment information. Here is an article that deals with this and has a suggestion for the next step in this process:
If you need help changing your payment information, credit card details, or billing information, contact iTunes Store support. Or you might find the answer to your question below:
- If you change your payment method, make sure your account information matches the credit card information on file with your financial institution.
- If you use an AOL screen name to sign in to the iTunes Store, editing your information on the Account Information page won't update your AOL account. If you need to update your AOL account information, contact AOL.
- If your previous payment wasn't accepted, you might need to change your payment information.
Change or remove your payment information from your iTunes Store account (Apple ID) - Apple Support
https://support.apple.com/en-gb/HT201266
Thanks for being a part of the Apple Support Communities!
Regards,
Braden