Myntra.com — Undue conveyance charges imposed

I had ordered denim jeans around 10 and I recieved a wrong product every time which I mentioned when I returned but Myntra instead of penalising the company chose me the Custmer who’s isn’t at fault
I kept faith on Myntra and have money in my Myntra credit and they are not giving it back in my account because if I place order they are taking undue charges
I am really harassed by the company ans will have to file a complaint if they don’t resolve now also