Snapdeal.com — Cheated by Snapdeal in product delivery (Only 10 pencils received out of 50)

After much online search for good 2B pencils, we decided to go with Snapdeal.

The order for the 50 pencils was placed on 7th July and the date of delivery was 12th July. I opted for cash on delivery. As insisted by delivery person who was in a hurry, I paid 400. (image attached) After he had left, on inspecting the package, it was found that the package contained only 1 box of 10 pencils instead of the 50 promised (Image attached). In other words we got cheated of 320 rupees.
When we contacted customer care, we were redirected to a useless chat bot in WhatsApp that cited that this product was non-returnable (image attached)

Snapdeal has once again proven its lack of integrity compared to other delivery services by only delivering 10 pencils out of 50 and not allowing us to return the product citing non-returnable policy and cheating us out of 320 rupees.