Help with resolving mixed technology failures and glitches

I am trying to locate the contact information for someone at DirecTV to assist with the above. I have a 7500 square foot home and we have at least 14 boxes of different types-almost all hard wired-but the technology is mixed resulting in various failures, glitches and nonperformance. I need someone from DirecTV to evaluate and resolve-not some cookie utter technician. Surely DirecTV has a department and contact info to address this situation -someone with actual technical expertise to address this situation. HELP PLEASE.

THANK YOU!