Scheduling a technician

I'm really hoping to get some insight here, pending I'm able to post my question because I've gotten "technical difficulties" twice trying to write this. Which "technical difficulties" seems to be the only thing I've managed to get with my Xfinity service. 

I've made two phone calls to Xfinity this week and both have left me with no results. First one, I spent TWO HOURS attempting to accomplish what should've been a 5 minute task. Between fighting with the AI chat to help me schedule a technician (which doesn't work) I finally got connected to a representative through chat who did everything but solve my problem. Instead of focusing on what I needed, they tried to lower my bill and then got upset with me when I declined because I'm not really all thay concerned about lowering my bill when I can't even use my service. I was then called from a different representative who asked me numerous times for the serial numbers on my modem and extender. The last 20 minutes of the phone call was crickets and I eventually hung up because nobody was there. 

Next day, I call hoping a daytime representative could be more helpful. While they were very polite, the result of my call was I have to wait 24 hours for the serial numbers for my equipment to be in the system. You know, the equipment that Xfinity sent me in the first place! Why is it not already in the system?

All I need is to schedule a dang technician because I do not have a coax outlet to connect to. This should be standard to the initial setup for service, so I don't understand why it's such a nightmare to accomplish. 

My call Monday morning is going to be my last call. So if someone could inform me of how to get results for this matter when I call, it would be much appreciated. Otherwise, I'm going to cancel my service because I'm not going to pay for a service I can't even use.