U verse freezing

Ok about to give up...all new equipment set up by service tech a few months ago who also checked my wiring, new tvs, new wireless receiver-- just setup (because that's what tech service phone rep thought was the problem) I have rebooted and unplugged a million times, all cords are new, brand new HDMI cords, nothing loose or connected wrong, and STILL picture keeps freezing on both DVR tv and tv with wireless receiver. Seriously, I ran uverse with a 20 year old tv for years without a day of problems and now this..could this be something on the ATT side of things? Reluctantly, I'm going to have to call Spectrum..which (Edited per community guidelines)..