Sun Direct - E-48-32 no signal

I am the customer of sundirect for the last 2 years. Recently i faced some problem with the rely of some channels. I got "E 48-32 no signal" this message for which i made a complaint on 15th and again on 17th and on 19th like that three times they have taken the complaint and was given the complaint numbers too. Bu so far no one has turned up to resolve the complaint. They made deaf heard of me but they talk very politely whenever we made a call to them. I can not understand to whom i have to approach to resolve my problem.