FLIPKART - QUALITY SIZE COMPLAINT

I PURCHASED A KING SIZE COTTON BED SHEET AND A DOUBLE SIZE COTTON BED SHEET FROM FLIPKART, THEY DELIVERED BOTH DOUBLE SIZE POLYESTER CLOTH BED SHEETS, WHEN I RAISED COMPLAINT, CUSTOMER CARE TEAM INFORMED ME THAT THESE PRODUCTS NOT COMES UNDER RETURN POLICY. I ASKED THEM WHY YOU ARE ALLOWING THIS TYPE OF FRAUD SELLERS TO SELL THEIR GOODS ON YOUR WEBSITE, BUT NO REPLY. I ASKED THEM TO RAISE COMPLAINT AND INFORM THEM TO TAKE BACK THE GOODS. BUT THEY ARE NOT IN POSITION TO RAISE EVEN COMPLAINT ON BEHALF OF BUYER. BUT THEY ARE READY ENJOY THE PROFIT PERCENTAGE GIVEN BY SELLER.