Picture Pixelated during warriors game s

Constantly getting picture pixelated during warriors game. Contacted support and they said they would send out a texh tomorrow. I cant believe that I'm the only customer who is constantly experiencing these issues and it's not just 1 channel it's all the time during the warriors game. I cant understand how I would be the only person with this issue? They ran diagnosis on the cable box everything is fine. Yet we have the pixelated warriors game