I've purchased many sunglasses during its summer cashback offer with paytm. I've no issues with its cashback because cashback has been credited in account according to offer's terms. its customer service is the best service which I've ever seen. Once I ordered sunglasses from Coolwink and delivery boy topd that we can't deliver product at your address because this address is out of range. Then I complaint it, and its senior officer has taken action immediately and my product delivered next day. Quality of its products is very good with awesome design. Overall it is very nice product with great cashback.