MS merged 2 accounts without warning. Now no access to 2ndary account

Situation:

I had an issue with XBOX hotmail and a gamepass activation app 5 years. They required me adding another email address as an alias to correct. (dont' ask me why..) This was a completely independent outlook address I gave them verbally.   I would continue to have issues with XBOX as there were also now 2 XBOX profiles after this change. Fast forward to app 3 months ago, and ran into similar issue when I inadvertently added my gamepass renewal to the outlook addy. They fixed the gamepass association with my primary ms account email addy.  I indicated I wasn't going through this again and asked how to disassociate my outlook account from the hotmail acccount. They suggested removing the alias under my ms account section. I did that. 

On or around Oct 3rd, my outlook account is no longer accessible. I have lost license records and other content. I spent 3 hours with outlook chat last night. And, they simply do not get the difference between an alias and a standalone account. I don't know how XBOX managed to add a legit email addy as an alias. 

How can I get my original email account which is NOT an alias restored with the folders/archive ?