Hi Bill Sproul,
Thank you for posting, I am here to help. If your name, billing address, expiration date, or CVV number has changed for your Microsoft account payment method, you can update it.
Update your payment method online:
Click this link to open: https://account.microsoft.com/billing/payments?ref=SMC-4026594
log in using your Microsoft Account. Check the payment method you want to update, and then select View or edit card. Enter your updated info, and then select Save.
For more information you can check this article:
Update a Microsoft account payment method
I hope you find this information helpful. Please let us know if you have any further questions If the answer is helpful, please click "Accept Answer".
Best regards,
Jansher