What does this message on my screen mean? - DirecTV

Message on screen reads Account Unavailable client has been disabled Restart receiver. Have spent two hours on the phone and no one was able to help me or even bothered to tell me what this message meant. Our new service was connected yesterday and I'm having trouble already and it's only been connected 24 hours

This question, "What does this message on my screen mean?," is about DirecTV channels, programming, equipment, and sports.