Losing signal

There seems to be 100s of posts on this issue, of losing signal over and over again. We need this fixed

Every five minutes or less lose connection (signal lost), change channels and switch back it works for a few minutes and samething over and over.  This has been going on for over a year and UVerse is unwatchable.  Switched to Fibre, changed out modem and receiver 3 times each. Cable runs from AT&T outside box directly to modem, receiver directly to modem, cable using port 1.  Changed out patch cable, changed out HDMI cable, even different TV, same problem.  BGW 210 modem, VIP2262 receiver.  Technician has been out countless times works for a couple days ans right back to where we started.  

AT&T technical support is no help, Advanced technical support is a joke. Asking for cable colors (rolling eyes), can't understand half of what she is saying. Current Technician is nice and tries to help, but he is on his 5th trip, not expecting anything different. This is a AT&T systemic issue and needs to be fixed.