If you receive a message that your AppleID has been disabled, you should first read this document. https://support.apple.com/en-gb/ht204106
Be aware, Apple never send email advice that your AppleID has been disabled.
You can also obtain help via this link. https://www.apple.com/emea/support/itunes/contact.html
If you sense that your ID has been compromised in some way, choose your country from this link and follow the appropriate instructions. https://support.apple.com/en-gb/
If you forgot the passcode.https://support.apple.com/en-us/HT204306
If necessary, for more security information, read this document … https://support.apple.com/en-us/HT201222