Videocon Industries — Under warranty TV not repair

Dear Sir,
we have a LED television which we bought 4 years back. recently it was not working. we informed the customer care who did come to our help and gave us an estimate of rs.5000 as the toatal repair charges. they said that the panel of the tv is not working. my question to u is that how can a part of a tv cost us an amount equal to the value of a new television. we tried calling the senior officials here but they werent responsive enough.