Terrible wifi speed

I have a plan for up to 600mbps and the most I've been tested at is 60! I have a netgear modem/router model c7000v2 and it's all good from everything I can tell when I go to my genie and check. So the issue is with comcast. Anyone else have terrible speeds despite having a fast modem/router and a plan of 600. I mean 60 out of 600 is robbery. Comcast won't send out a tech because of covid 19 but they have no problem charging me. On top of that I've seen comcast trucks near me at other houses