Slow U-Verse Internet Speeds -- and Can't Speak to Anyone for a Fix

For the last 10 days or so, my U-Verse Internet has been at 1/10 or less of the contracted speed.

I try to contact technical support, but get a circle (Edited per community guidelines): the message says that, due to COVID-19 it may take longer to speak to a representative, but I never get that far; the system hangs up on me. The automaton on the other side purports to do a speed test, which finds the speed at above 100 MBPS (so it's fine as far as they are concerned, hence the hangup and inability to speak to a representative), but when I do the speed test on my own, the speed is less than 15 MBPS and sometimes less than 5 MBPS (neither of which is sufficient for my professional needs).

Also, I need to open ports to allow my VOIP connection to my office to work -- but can't get anyone to help. And the automated system can't comprehend my request.

I will be writing to the FCC, but AT&T is so big they don't give a (Edited per community guidelines).

Anyone else having this experience?