Trendin.com — Money not refunded even though product returned 20 days ago

Address:	Bangalore, Karnataka
Website:	www.trendin.com

Hello sir,
I had bought 4 tshirts from trendin.com. After delivery i found that the quality of the clothes not good and hence returned them. My products were picked up by their courier service aj express on 26/7/2016. I have got refund of 3 products within 10 days but even after almost 20 days i have not got refund of 4th product worth rs 450. I contacted them through mail and phone and they assured that they were looking into the matter but it bore no fruit. The website showing that the product has been delivered to their warehouse but they are not refunding the money. Please look into the matter and take stern action against the company