NDTV — NDTV Gadgets 360 : Delivered missing product

Address:	New Delhi, Delhi
Website:	gadgets360.com/shop

I ordered a zoook bullet bluetooth device from NDTV Gadgets 360 in Dec'15. They delivered a missing product on Dec 26, 2015.
Order Number - OF96AA4A1E44B8D55C
I checked the product after the delivery and the main product was missing.
I have complained to them many times. But they neither replaced nor refunded.
It is been 2 months and yet there's no action taken by the company.
Each time i call the customer support they ask me to wait for 3 business days and that's it.

Attached the image of the package i received and images of the email communication.