Daily WiFi drops, no solution

I've been dealing with daily drops in my download. My plan that I have includes 1200 mbps, but will drop to 2-3 mbps during those daily occurrences. The quick resolve was to reboot my modem every time. When it started happening, I've initially replaced my modem from the XB8 to XB10. I've contacted chat support at least 10 times and talk to at least 3 "managers/supervisors". I had a total of 4 people from Comcast come out: 2 contractors, an in-house tech, and the supervisor of the in-house tech. I've been misled time after time from tier 1 agents and supervisors about having maintenance come out and multiple cases or SRO being made. The coaxial from my tap to my modem has also been replaced, the supervisor removed a MOCA filter connected to my modem believing it to be cause and still no resolution. I've been trying to have maintenance come address it, but no wants to schedule a request for it. I've had to do my research because Comcast hires incompetent employees who don't understand that I am receiving partial service and have provided evidence of decreases in my downstream channels. I am so disappointed in their service.