Myntra.com — Wrong Product Delivered /Refusal to return

I had ordered a Women's Giordano Watch from Myntra, instead received a baby frock. I initiated the return request, which was first accepted. Then, the delivery agent refused to pick up the order. After which my return request was denied.
The Customer service now informs me that they have denied my return request.
This is unacceptable and I need assistance on the same. The watch cost quite a lot.