Myntra.com — Account Hacked and Myntra Credit used

My account was hacked last month and after taking multiple follow up it has been resolved now but during this period someone has already placed and order and used my Myntra Credit.
After reaching out to Myntra customer care now the myntra guys are saying we can't help u and you need to register cybercrime complaint and cybercrime team will work on this. Seriously, No security and No importance to customer's concern.
I have already provided all necessary information regarding fraud transaction and details of the person. what else is needed from my end i don't know.
I need my Myntra Credit back and Myntra has to work upon this immediately as its purely a big issue with Myntra Security. Myntra cannot just ignore this.