ShopClues.com — Seagate expansion 2tb external hard disk

I have placed an order for buying 2 tb external hard disk on 27th and received it on 4th of july. I have requested the return on the website on the very same day of delivery and asked for a refund as the device is not getting detected in any laptop or desktop. It has been more than 10 days no one came and picked up my product. I have been calling the customer care services, their frequency of picking the phone is also very less. Their system is always getting updated and still there is no solution for this. I have been buying so many stuffs from different website never had to return any product. This has been my worst experience till now. Still no one has been helpful regarding this return.