I told the person yesterday, when the tech people are coming out, call my office number, here it is. Do not call the cell number, the one on the account.
They were supposed to be here between 10 and 12: nobody showed up.
So I call back in... and am told the tech called me. I ask, did he call the office number? Yes, that's the number we gave him. I responded -- I have caller ID, that shows two calls today, and I answered both. Uh... no explanation, we'll tell him to put you on the list when he's available.
Checked home phone. Yep, he called there. Called back and was told someone will be here "today."
Someone was angered enough to create Comcast Must Die.
UPDATE: 6 PM local, it was fixed. First repair guy again called the wrong number, but that was handy since I wasn't here, but was available via the wrong number. He showed up, traced the problem to the box at the edge of the property (which contains the amplifier), but that was something a separate team had to fix. They showed up, left (I suspect to get a replacement?) returned, and high speed is operational again.