ShopClues.com — Wrong product delivered and site refused to refund the money

I have placed an order for 3 shorts online for waist size 36. While placing the order they claimed that if I find any discrepancy in size, they will take return of product and refund the money. I got completely different size shorts - 28 & 30. I sent them pictures depicting wrong size. Without obtaining complete information, they just refused saying that they have sent the right product. They are actually cheating the online customers.