Too many internet outages

I live in the 98075 zipcode border of Issaquah and Sammamish. I typically have at least a couple of internet outages per week each lasting more than a couple of hours. On 9/3, I lost connectivity from about 4PM to 6PM. On 9/4, I lost connectivity from around noon till 9PM. In all of these cases, customer service blames my equipment, asks me to disconnect and reconnect my modem. Nothing happens as a result of those actions, but the internet eventually comes back up. On 9/4, they scheduled an appt for a service rep to visit us on 9/6. However, I cancelled it after it came back on at around 9PM. This doesn't seem to be a problem with my equipment or my cabling. Has anyone else experienced this problem? It seems to be a problem at Xfinity end.