How to get a service vist at your home?

It is sooooo frustrating to jump through all the guantlets just to try to get a service visit from comcast. Does anyone have any tips?  We have to do zoom meetings for school and office and are experiencing numerous dropouts. I posted the signal values for my cable modem and they are clearly below the reccomended for good service. What do I need to do in order to have comcast check the signal being delivered to my home?

thanks,

Todd