ShopClues.com — incomplete refund

Address:	737136
Website:	www.shopclues.com

I had ordered bombay dyeing double bed-sheet (2 qty) on 7th sep 2017. The order id. For the both was same (I. E.[protected] and both the product was delivered in the same packet, hence the return request for both was same, and as the quality of the product was not good, i immediately requested for return and as there was not a separate return request link for two separate products, i thought both the product came in the same packet so i have to return both in the same packet. So i handed both the product to the courier boy. The courier boy also asked me if i was returning both the product. He handed me a slip but i did not noticed that the qty was not mentioned in the slip. After few days i got my refund of rs 413. But the actual amount was 825. As i contacted customer care, they told me that i have only requested return for one product. And they have received only one product. I immediately contacted the courier boy. He also said that he has sent both the products in the same packet. And the important thing is that the courier boy also did not notice the qty in the slip and also he does not have any written slip or proof for that. How is it possible that i have already returned both the product and courier boy also have send both the product in the same packet and shop clues only received one product? Shop clues are lying. Please help me to get refund.
Thank you.