[Resolved]  Nykaa.com — Refund not issued for missing product

I had placed an order out of which a Bobbi Brown Lip Duo package has arrived without the lipstick inside an empty box. That lip duo costs 2000 and Nykaa refuses to take accountability and return my money. They have claimed thrice that there has been no mistakes made from their end and they won't be able to help.
Inspite of writing to them and sending them images of the missing products, they have not given me any resolution for my problem.