Greendust.com — Different product than order and denay for return

Address:	Nashik, Maharashtra, 422003
Website:	greendust.com

I orderd "Black 15.6 Inches Laptop Bag for Dell" from greendust.com, there is 15 days return policy mesion everywhere on website and emails whitch i got.
Actual product i got is different than the product given on website. when i ask for return the product, they says there is only 3 days return policy and denay for return.