Apple payment

See this Apple document If you see a message that says 'Your account has been disabled in the App Store and iTunes' https://support.apple.com/en-us/HT208856 "There might be a problem with the payment method that you have on file. ... When you see the message, don't try to edit any of your account information."

You can get Apple telephone support for help in solving your problem using this link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362 

You can also use this iTunes Support form https://support.apple.com/en-euro/itunes-contact. 

And here is how to contact iTunes worldwide support via text or chat using this link https://support.apple.com/choose-country-region/itunes After choosing your country, see the heading Tell us how we can help.

Your account has been disabled in the App Store and iTunes -

https://support.apple.com/en-us/HT208856

ASC - Late 2012 Mac mini, macOS 10.15.4; Watch, series 5 GPS/cellular, watchOS 6.2; iPad Air 2, ipadOS 13.4; iPhone 8+, iOS 13.4; TV 4th Gen, tvOS 13.4;  HomePods, audioOS 13.4 and Airport Express w/ Airplay 2