I work for a very large Germany-based multinational, and <ourname>.onmicrosoft.com was registered by a school our founding family started in an Eastern European

I work for a very large Germany-based multinational, and <ourname>.onmicrosoft.com was registered by a school our founding family started in an Eastern European country where we have a factory. We gave up and established <verygenericword>.onmicrosoft.com, and that is still our tenant. However, we were able to get <ourname>.com validated as our main domain. Very eventually, and only because said school cooperated, we got control over <ourname>.onmicrosoft.com. Get your TAM involved if your ticket isn’t handled in the next few days.