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."
You can get Apple telephone supportfor 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. But,
also be sure and see the "Support Page" tab covering help with iTunes
Subscriptions and Purchases https://support.apple.com/en-euro/billing
You also can contact iTunes worldwide support via text or chat using this link https://support.apple.com/choose-country-region/itunes
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And see this document If your Apple ID is just locked or disabled https://support.apple.com/en-us/HT204106 "If you or someone else enters your password, security questions, or other account information incorrectly too many times, your Apple ID automatically locks to protect your security and you can't sign in to any Apple services."