Myntra.com — not refunding money of a missing and and an already opened product.

Order number:[protected]-7067101
Order date:[protected]
Amount: inr 1499/-

I have ordered this a pack of 3 trunks. To my surprises the internal pack was open and out of 3 1 trunk was already missing.
For this i raised a complaint thrice and they haven't picked up the return of product plus they are not returning back the amount as well.
Kindly help me in get my amount back if possible with interest of 10% every day so they understand that they have to be little professional on matters.

Recent complaint number with them: in[protected]