TV pixelating after Xfinity does line work (underground utility lines) in my community

My TV (it's actually both TV) are pixelating when I watch any programs, live TV and reruns on any networks, the only thing not pixelating is watching on-demand or apps thru the X1 box, help! I have restarted my box by unplugging the cable box, I have unplugged the cable line, Xfinity has done a restart and refresh, I also did a restart and also a system refresh thru the setting on the TV, nothing is working!

Last week on 7/30 & 7/31 Xfinity did work on the underground lines in my community (Varsity Lakes) in Lehigh Acres, the internet works fine, my home security and mobile work fine, it is just the TV, I pay for TV services so I should be able to watch my TV, but I CANNOT!

According to AI & copilot it is an issue with the lines coming to me, not my box or my house, it was described as white noise and/or traffic in the outside lines plus weak signal being sent thru the underground lines!!! Xfinity messed up but is refusing to fix their error