MFA Issue blocks Global Admin / Data Protection Team disconnects calls

[CebicTech]

Hi.  I have just learned that the Microsoft Authenticator app allows you to create MFA for multiple Global Administrator accounts, but those accounts will not properly transfer when you move to a new Smartphone.  I have one tenant that has only one Global Admin Account secured using MFA and the Microsoft Authenticator App.  The MFA is no longer working.  I have been told to work with the Microsoft Data Protection Team by calling them at 800-865-9408.  The weird thing is they keep disconnecting the call before the issue gets addressed.  It has happened multiple times.  Calling them back results in hold times averaging over 2 hours.

Does anyone have ideas how I can get my MFA issue solved perhaps by reaching the proper group at Microsoft in another fashion?  Is there some customer advocate resource at Microsoft I can contact?

[#2]

Quick update on this issue. In my experience, once the Microsoft Data Protection Team has flagged your phone number / Domain Name, reaching them via phone results in long hold time and them disconnecting the calls. When I called back with a different Caller ID, I was able to get my issue resolved.