Samsung TV — Stopped Working

Dear Sir/Mam,
I bought samsung TV last year. 3 days before it stopped working without any reason. There is no sound, no video, nothing. I called the dealer from where i purchased it (I Purchased from Viveks - JPNagar - Bangalore). I put complaint on 31-August-2009. It was supposed to resolve within 24 hours but no one has come to my place yet to repair it. Can you please help me out in this context? And my warranty is expiring on 03-September-2009. Please need immediate response.
My mobile no is: [protected]