Flipkart — Faulty tv supplied not willing to replace with other brand or refund payment

I had purchased one 43" blaupunkt tv on flipkart e-commerce site via on line payment which was delivered at my home on 16th July 21 but while engineer installed TV it had faulty panel and I also observed that other parts & speaker quality is too inferior in comparison to original Blaupunkt from Germany. I wrote company to replace it with another brand like realme tv or refund my money but they refuse to do so stating that in replacement they will send only blaupunkt tv which seems to me fake & not upto the mark for the money I paid for such inferior quality.