Yebhi.com — Not delivering the complete order

Address:

Gurgaon, Haryana

I had a promotional coupon on Rs.1000 from yebhi.com which i used to purchase two pair of Adidas socks from their site. It cost me Rs.1078 and i redeemed the coupon and paid the extra amount Rs.78 through my credit card , complete detail for the confirmation mail i received from them is attached. But i got only one pair on delivery. I contacted customer care and they said it was out of stock and are denying to give me the complete benefit of Rs.500 left in coupon amount. I felt cheated and want my product to be delivered or Rs.500 in my account to purchase another product.