Myntra.com — They have deactivated my ID without giving reasons and kept 1081 rupees of my credit balance

Website:

Myntra.com

Some days back I was trying to order from Myntra when it showed that my Cash on Delivery option has been deactivated. I complained several times but they did not get it right. In fact, now when I call them, they say that my account has been disabled and that my Myntra Credit balance of Rupees 1081 will not be given back to me. This balance was from a purchase I made, which I returned. It is solely my money, which they have kept and are not returning.

Now when I try to login, they say that the account does not exist.