Vijay Sales — Videocon 43 inch 4k TV

We had lodged a complaint about our Videocon 43 inch 4K TV in FEBRUARY.
A mechanic named Sandeep Patil visited and took 650/- as visiting charges. He inspected our TV and said that there is a problem with the backlight.
Our TV is still under warranty.
The executives do not answer our calls. It's been 6 months that we have been chasing the Videocon as well as vijay Sales executives.
The part is available but they're demanding money for it even though the TV is in warranty.

If the replacement of the part is not possible...we want our TV to be replaced entirely asap
The purchase was made under the name of GUNJAN GIRISH EKBOTE.

I also sent a mail to Vijay sales customer care. The executive was supposed to call within 4-5 days...but it's been more than a month
Ref id- M[protected].