[Resolved]  Videocon 14 Inch TV — not working properly

we purchased videocon ctv 14 inch tv from kohinoor 182, haji habib bldg, dadar (e), mumbai -14 on 4th january 2008.after few days it was not working properly we complained about it to kohinoor they have send their engineer thrice but no chance the same problem continued .the engineer took the mother board of the tv set and said he would replace the same but he did not replace it.Then they told we will replace the tv .since april they are telling us that we will replace it but till date(9july) they have not replaced it .we byed it for our entertainment but we feel our buying was worthless.kindly help us to solve the problem and oblidge