AT&T American Telephone & Telegraph  Cut off my email without explanation and blocked all ways to communicate with the company Internet

An email advised me to to make some changes due to upcoming changes in the company's email domains. I kept getting error messages and password rejections. When links to further contact points failed, I called the company's telephone number.

The person I talked to told me about upcoming changes, then contradicted herself several times. Because the efforts took so long I had to stop the session for another commitment. The person reconfirmed my phone number and arranged a call-back to me at a specific time the following day, reconfirming my time zone.

The following day, when the return call had still not come a half hour after the scheduled time, I called the number. Since they had not given me an incident report and nobody could find a record of the previous day's call, I had to describe from scratch. 

After numerous attempts, the issue seemed close to resolution. When I clicked what was to be the final link, the system gave an error message undoing everything.

She mumbled something about an outage, promising everything would be solved when the outage endedd. Two days later, I am still without communication with the company.