disconnected early, horrible way to end it.

Hi, 
We're closing our office for good, so I had to terminate our Business Class service effective 1/31/23. I called last Thursday, 1/19, and spoke with a nice, helpful rep (Travis L. Carter was his name or pseudonym) and explained the situation. He tried, of course, to make sure he couldn't keep us somehow, but we're going to a full-time work-from-home with an optional co-working space we can visit for meetings, Internet already provided. 
I was very clear that we need internet while closing the office, so I needed it to terminate on/after 1/31/23. He clearly understood and send me a docusign doc. I noted that the disconnect date was not on it, he said that it was in the system for 1/31, no worries. 
The next morning (1/20) after working for an hour or so, the internet dropped. Modem shows connected, but no traffic passing beyond the modem to the next hop. Reset everything of course, and finally accepted that you cut us off early, despite all my efforts to make sure that didn't happen.  I was able to connect to my hotspot and login to my Business Class account, and it showed we have no current service with you. I initiated a support chat with "Jesus" (chat ID 331687245185424690), and after checking many things over the course of an hour or so, he said he'd have to escalate it, and "The Tier II department will contact you within the next 4-8 hours to continue with this process."
No one called, texted, or emailed, the weekend came and went, I came into the office this morning, no changed. I reset the modem just for good measure, still no IP traffic. 
This was not a 'goodbye,' just a 'until we meet again." I have had generally good service and have recommended your service many times. But I guess crappy Comcast/Xfinity Home service has finally caught up with the Business Class division and infected you. Mistakes happen, but to not even acknowledge this all day Friday or over the weekend? I can imagine that your rep, as nice as he was, perhaps made a mistake in the system. But if so, and if you don't see that as YOUR problem that I should not have to deal with, there's no hope for you. 
We'll have multiple people here over the next week working on the closure, and if everyone has to use a hotspot and can't print to the networked printer, what a sour taste this will leave in my mouth as well as that of my co-workers. Many years of good service at this and our previous office wiped out by an unnecessarily bad "breakup" at the end. 

Sincerely pissed long-time ex-customer (since ~2004 at various jobs),
Tony 
<Edited: Personal Information>