Myntra.com — Received wrong product , Now not taking it back

I placed two orders from Myntra, And I received one order which was totally different but was from the same brand Roadster, the another product was exactly what I ordered. Now I tried to get this issue resolved through customer support but they told me that we sent you the right product which is totally wrong. My order number is[protected]-8918403 please help me with this I don't need it