Flipkart — Panasonic 4K android tv

I have bought a tv from flipkart on 17th oct 2020 for 36000/-and with in a week it’s screen goes off and don’t start.I requested for refund as it’s in there stipulated period of returning.I requested for returned on 27th oct and they gave me a msg that technician will visit on nov 1st n we will get it returned after checking.but technician didn’t come on nov 1 after calling them they again given me assurance that it will be done nov 2 before 9 m but again technician didn’t come n now they have given me new date of Nov 5th. They are making fool of customers and frauding them.kindly resolve my issues but getting my money back.