[Resolved]  Videocon TV / Pip Model — authorised dealer not able to repair tv although he has charged Rs 2100 in three installments

Since may 2008 our tv has some minor probelm. we are contacting your authorised repair agent in chandigarh (SM SERVICE sector 40 chandigarh. they are not able to diognosis the defect but arbitrarily changed many components ( as they claim) They have charged Rs 2100 in three installments till date. they do not issue any receipt. During the entire period the problem has not been solved. I am calling them frequently. They promise to come, also visit after very long interval (after many number of calls). But
END RESULT is
Improvent in Tv service = Zero
payment taken by them = Rs 2100
Now they do not respond
I am not able to see tv for the last 7 months