Snapdeal.com — Incorrect quantity delivered

I had ordered wallets with 3 quantity in single order but i have recieved only 1 quantity with amount being charged for 3. When i tried to return the product, they asked to return 3 quantity which is actually not delivered and said amount will be refunded of only one. Thus is worst experience I have from any online shopping application and snapdeal truly should not be such irresponsible and unhelpful.