Constant packet loss after maintenance in my area

Getting intermittent packet loss for no discernable reason, getting single digit upload speeds (zero). My games are unplayable as I either just rubber-band around or constantly disconnect from games and working from home has been a nightmare for the past two weeks as people cannot understand the robotic voice I'm speaking in and I can hardly even connect on my company VPN.

I bought a brand new modem as your representatives managed to gaslight me into thinking that was a possibility, NOPE. Even when hard wired with brand new cables that I also got gaslit into buying, my internet is still an experience I can only describe as dismal. 

I've had a tech come out who couldn't find out the issue, we have been having maintenance come out on an almost biweekly schedule with the other people in my area reporting issues, I have thrown a few hundred dollars into this problem on my end, and more through my company with my loss of productivity. And even on my time off I can't enjoy my time because it is wasted with Cox reps trying to sell the stupid box for the millionth time and wasting hours of my life doing modem resets that I have already done, and asking about my router after I've told them I've been hard-wired to the modem during this whole fiasco.

Weeks of this, what exactly is my internet bill going towards? What am I spending thousands of dollars a year on when you guys can just destroy my connection to the internet on a whim and ruin an entire month for me and gaslight me about my modem which now I have multiple of from falling for it?