Unable to update Apple ID payment method

This is a user helping users with tech questions, we are not apple and apple do not read your posts here

try reading

If your payment method is declined in the App Store or iTunes Store - Apple Support

If you wish to reach out to apple then try  Get Support (apple.com), or 

Contact - Official Apple Support

Please do as the screen suggests and contact Apple directly by tapping Support at the top or bottom of the screen.