Amazon India — Seller shipping wrong item in replacement too

I had ordered "Silicon Power DDR3 16GB (2x8GB) 1600MHz " on 20 Nov and it was delivered on 21 Nov. The item in the box was a 4GM RAM instead 2x8GBs RAM as ordered. I reached out to Amazon Customer care and they put a replacement request saying that I will get the 2x8GB RAM. They created another order for it on 21st Nov. On 22nd Nov I got the order delivered but this time also, it was same 4GB stick. I again connected Amazon customer care but they said that they can only give refund to me.

My point is that I don't want refund but the product that I ordered. This would be an ill practice that Amazon sells something to someone at a price and then instead fulfilling it, it says that it will give a refund