DishTV — DishTV - Setupbox not responding

My DISHTV VC No is [protected], Sir my setup box was not working properly, 15days back my setup box was replaced with old rusty box, I have objected for this but he promised to replace it if doesn't works for which I have paid 350+150, but with in one week setup box stopped working again I have complaint about it same person named Naveen came and adjusted the same setup box in my absence but with in one week the same problem faced again the same person came I requested to replace the setup box but now he is trying to avoid it, When I told him I will report it to your company he says that whatever u want to do it .(Now I am unable to see any channels ) My E mail ID [protected]@gmail.com Phone [protected]