My payment method is being declined in iTunes Store

Hello, thanks for contacting the Support Community.

If your address for this payment method has changed, make sure to update it in your Apple ID settings.

Remember: Apple needs the most up-to-date information to process purchases.

If your address has not changed, make sure the card isn't expired, additionally make sure you don't owe Apple any money (such as missed subscriptions, payments, etc).

To contact Apple Support in North America, please refer to the following:

Phone Number: 1-800-275-2273

American Sign Language Support: https://www.signtime.apple/applecare/us-EN/asl

Chat Online: https://expresslane.apple.com

Hope this helped! 

Hello! You'll usually receive an email from Apple regarding debt on your Apple ID account, if you haven't received this message, do the following...

Remove the card from your Apple ID.

Re-add the card with the most up-to-date information.

To contact Apple Support, please reference the contact information in my original post.

If you need more assistance unrelated to this thread, don't be afraid to ask Apple Support or open a new thread on the Support Community.