IndiaCakes.com — A scam - they block the money

IndiaCakes are classic example of scam in India. I had ordered a cake, there was no response from them. After 2 days I tried chasing them, they responded that they can't deliver to that address, neither will they refund the money since they have no refund policy .
They said they will send a coupon code.
This is a classic example where vendors block customers money.
I told if they couldn't deliver, they should not have deducted the money at the first place. Neither are they delivering the cake, nor are they refunding the amount. If they can't deliver to my required addresses, what am I supposed to do with coupon code?