Shop Clues — Received defective products and not responding to my return request

Address:

560012

I buy a NOKIA LUMIA 710 from shopclues and it was delivered to me 15 days back, when I open the box I found that the product is defective and the very same day I file a return request on shoplclue site and I also uploaded the Image of defective product, and I am continuously mailing them everyday from last 7 days and they are not responding to my return request. This is the worst experience ever I face in my shopping journey.