Q: iphone6 is disabled. Forgotten answers to security questions.  Rescue email address inbox no longer in use...help

You need to ask Apple's Account Security team to reset your security questions. To contact them, click here and pick a method; if that page doesn't list one for your country or you're unable to call, fill out and submit this form.

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If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

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