Apple ID

Why can't you unlock the ID? What happens when you try? Error message(s)?

If your Apple ID is locked or disabled - Apple Support.    

If you have changed your ID or password, have you followed the steps in this article?

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

If necessary, contact Apple ID Support. Based on multiple posts I have read, they may not be willing to help. See the Apple Support articles below for contact information.  

Apple ID - Official Apple Support.    

Contact Apple for help with Apple ID account security - Apple Support.   (Link doesn’t always load)  

Get Support          Work through the screens to get a chat option. 

Apple Support schedule phone call

https://twitter.com/AppleSupport.          People have posted it may take an hour or more to get a response.

From the Apple Support article below. 

Without proof of your identity via security questions and other carefully selected criteria, Apple Support can't help you reset a password or perform any other actions on your account. These policies are audited and reviewed on a regular basis.

Security and your Apple ID - Apple Support.      

Are you seeing activation lock? If yes, to make a long story short, you'll need to (1) recover the needed password from the person that last set you device up; (2) have, or recover, your own password for the device; (3) present your original purchase receipt for a pertinent device from an authorized Apple seller with the device’s serial number on it to Apple Support; or (4) have a court order instructing Apple to assist in the provision of access to a decedent’s information from the deceased person's accounts.