Tech never showed up for installation

I had an installation appointment set for today at 1:00pm-3:00pm CST. 

I was home the entire time, watching for the tech to arrive. I received a text message at 2:06pm that the "tech had arrived and will be with you in a moment." I proceeded to go outside. The tech was not at my residence. I looked up and down the block thinking perhaps they went to the wrong address, no tech was on my block at all.

At 2:18pm I receive a text message that my appointment has been rescheduled. None-the-less, rescheduled to a time that I am unavailable and over a week later. Now I had to waste another 40 mins of time going through an automated bot to just speak to a human, only for the human to tell me what I already know, that the tech said he was here (which again, he NEVER WAS) and that the appointment was rescheduled. ZERO ability for the customer service rep to rectify the situation. After repeatedly asking to talk to a supervisor or someone who can fix this massive customer service issue, she only replies to me "dispatch says there are no appointments available until 1.5-2 weeks from now." I don't care what dispatch says about appointments, I want to know what you're going to do to FIX this issue. I already had rescheduled my life around being able to be home in the middle of the afternoon so that I could get service. Your tech either lied, went to the incorrect address, or there is some internal issue in that they backed out of the appointment because of what was involved.

None of these are issues on my part, this is Comcast massively messing up. Now I have to wait another 2 weeks for an installation appointment. Who knows if the tech will even show up...again.

This is absurd and BEYOND unacceptable. Why am I paying $100 for an installation in which I'll have to endlessly reschedule and rearrange my life on a whim? Completely unfair, questionable, and dubious business practices.