Jabong.com — used product delivered

Address:

Mumbai City, Maharashtra, 400053

I received a used product...I raised a complaint as soon as i opened the box and saw the product is not is a usable condition...They registered my complain and one day later it was communicated that my complain has been denied as the product is used...how am i supposed to deal with this??? It is a very good way of cheating customers by delivering damaged goods and then denying acceptance.