Samsung India Pvt. Ltd. M. No:cs - 29z50 — Not replacing the defective set

dear sir,
i have purchase samsung color t.v. model no:cs-29z50 on dated 09/04/2008. by the delar patel radio ele. stadium road Ahmedabad.after purchseing the t.v just within two days make two big spot in picture scree. we are complining about the problem to samsung customer care. and there enng. come and chake it and they said in her service report that some problem in picture tube. than we are request for replacing it.

many time we are call for samsung customer care regarding replce our t.v. but they are not responce properly to me.
they are just commited to me but not take such action on it.
they are prommise me that your problem solve within 24hrs but still not solve.