Vu Televisions — TV not working in 25 days of purchase

Sir,

I had purchased tv from VU 55" television on 27 June 22 for Rs.43k, but it is not functioning since 25 August, 3 times technician came to replace part, but every time they use to find different issue, now they asking me they going to change some other part, Already two times changed the others part,
I want them to replace New TV or refund money.
Please help