Myntra.com — wrong product delivered and not exchanging

Address: New Delhi, Delhi, 110051

I ordered tommy hilfiger flip flops and received some local brand poor quality flip flops. I requested for exchange but they are not responsive. I placed the request on 16th june still there is no follow up on it from their side.
Its been 20 days and my money (1500rs) is stuck with them.
I even contacted the customer care service of myntra, they gave me false assurance for it and did nothing to resolve my issue.