Reliance Trends — wrong product received and unable to return

I received two Kurtis instead of the 2 tops that I ordered on Reliance Trends using my 1000 rs off coupon. However, when I tried to return, it showed that I would have to ship them myself. I don't want to waste my time due to some delivery faults. Also, they said they would refund only the money I paid and not the actual price (I applied the 1000 rs coupon and got the tops at a lesser price). Also, I would not get the tops I ordered. I also complaint on their customer care but it has been more than 1 week and I have not got any solution. So, at the very least, I want that they should arrange a courier service to take that wrong product from my place and refund me the actual amount.