Q: my Apple ID disabled

Your Apple ID

    1.  Forgot iCloud Password

    2.  Forgot Apple ID

    3.  Apple ID - Apple Support

    4.  Manage your Apple ID primary, rescue, alternate, and notification email addresses - Apple Support

    5.  If your Apple ID has been locked - Apple Support

    6.  About your Apple ID email addresses - Apple Support

    7.  Get help with Apple ID

From a post by Kappy

Contact Apple here

iTunes_Contact_Form

See this article:

What to do after you change your Apple ID email address or password - Apple Support

Especially the section:

Apple Online Store

Update your Apple ID and password on your iPhone, iPad, iPod touch, Mac, and PC.

iPhone, iPad, and iPod touch

Go to Settings > iTunes & App Store.

• If you're signed out, enter your updated Apple ID and password.
• If you're signed in with your previous Apple ID, tap your Apple ID, then tap Sign Out. Then enter your updated Apple ID and password.