Flipkart — Hp deskjet ink advantage ultra 4826

I ordered a HP DeskJet Ink Advantage Ultra 4826 from flipkart named - HP DeskJet Ink Advantage Ultra 4826 while I opened and switch on its seems not powering on
Imeditly I rise a complaint . They accepted and i got a message from brand side technician would be sent they will check. Technician also came and they accept this is a fault only and they give(DOA) DEAD ON ARRIVAL LETTER and also they do packed again and sealed it. The copy of the DOA Letter also send to flipkart customer care service but steel their is no response. Only they are calling and say we r looking for it within 7days your problem will be resolved. After 2 r 3 days they send your problem is resolved. Then I rise the complaint again now they told its brand replace only u can conduct brand and it's under brand warranty only u can go for warranty claim service. It's new product why should I go for warranty. So I need refund