[Resolved]  DishTV — Some channels are not working in one connection and same channels are running on another dish tv connection in the same house

We are having two dishtv connections in one house. One connection is running smoothly and in second connection some channels are not working. When i called on toll free number, they said environmental problem in my area and technician will visit at charges Rs 200.
But can you tell me, in the same house, how environment problem can occur only in one connection and not in second connection.
They just want to make money by giving pain to the customers.