Is legal action necessary?

I have Xfinity service for years. I also have 3 mobile lines. I moved two weeks ago. I put in a move request prior to moving and have e-mail confirmation. The day I moved in 7/15 I chatted via the app to set up my internet. We tried for almost two hours to set it up and could not so the representative said a tech would come on the 17th. The tech never showed. I chatted back in and spend 6+ hours on the phone via chat and phone unsuccessfully trying to get my services started. I was told the rep from the 15th actually canceled my services and never made a tech appointment. After all those hours, there was no resolution. The rep said she should call me back the next day. She did not. I called back in and after another hour the phone another tech was scheduled to come by on the 27th. This tech also never showed. I called and chatted back in several times and still have no service. I have spent 12+ hours just trying to set up my service. My new building comes pre-wired and set up for Xfinity service so there's no reason this should be happening. Currently, I have been at my new place for 2 weeks and still don't have internet service. I'm now being told I need to wait another week for a tech to come out. This is beyond ridiculous. I want to cancel my Xfinity services but I can't because I have Xfinity Mobile and that would cost me a lot of money if I don't keep my Xfinity services. I feel I'm being taken advantage of. Why would representatives keep saying I need to wait for a tech to come out and the tech just never shows?! I have all my e-mail confirmations and I screen recorded every time I chatted in to Xifnity customer service.