Videocon Television SIM & Trim 29 Inches — Extremely Poor service in Warranty Period

I purchased a Videocon TV in October 2008 from Vijay Sales, Prabhadevi, Mumbai. In the month of July 08 ( within the Warranty Period) faced some techinical problem with the TV with sound control and picture blurring. A Service person named Sanotsh attended the problem but he was not able to solve the problem. He assured that he would forward my case to another service person. After week days he again attened the case but he was not able to do anything. Then after another person name- Sanjay Mobile No-[protected] whos was suppose to be a senior technician came home & after checking said he had to replace some part and the part he had bought was not proper so again he assured he wuold get back u once he got this kit from the ware house. After few days he came with some part but he replied that this also did not solve the problem He again assured me that he would replace the television now and and that my case will forward to HO for replacement. It has been 15 days to that and i have not yet got any revert from them. The service centre here is based out of Vashi, Mumbai and handled by Umesh Mobile # [protected] with whom i have spokne time and again. The region is handled by Atul Mobile # [protected]. On speaking to him even, all i get is assurance. What to do ? my moblie # [protected]