Shoppersstop.com — Received below standard dirty infant product stating as non returnable

Shopper stop has delivered old, dirty and potentially unhygienic product for my infant and upon reaching out to customer support there is a lot of to and fro mail just with the same context as if I'm talking to a bot.
I've sent required product images over email highlighting stain marks along with product price tag expecting to receive proper support.
Also tried calling support executive to get sufficient response but no help from them and email response is very much generic not catering to my ask where I'm seeking explanation.

Case No : CAS-239587-Y9R4L2