IndiaCakes.com — Cake not delivered and No refunds

I ordered a cake on 7 the Nov for my father's birthday.( Order Id 1718796). It was not delivered. Customer service people says they cannot refund. They will provide only coupon which we can use next time. I placed an order last time and they couldn't deliver. They refused to refund and gave coupon code. This was repeated 2 times and They couldn't deliver. This order also they couldn't deliver.What will I do with coupon if they cannot deliver the cake. I am asking for refund, but no response