The support channels are failing miserably

I own a company and registered for a work account 2 years ago. We haven't purchased any Microsoft products yet, and I got logged out of authenticator. 

We're in a vicious cycle where logging in requires authenticator and authenticator requires authenticator.

I called technical support Monday and was told to sign up for new account to log a ticket. Mid-way through the call the agent said his shift ended in 2 minutes and he would call me back Tuesday. He never called back. 

I followed up and waited on hold for the data and privacy department for 45 minutes 3 times, and each time the call dropped. 

I tried using the support agent and it won't help me, because it says I'm not the global admin on any of my accounts (this makes no sense).

Are there any channels for escalating this?

We would like to buy Microsoft 365 for our business, but now I am terrified of doing this, because it seems like there is no way to get technical support.