Zivame — Refund

I have ordered 4 items from zivame (order I'd[protected] on 7th March but they didn't delivered my order and today they cancelled my order without informing me through mail or any source and not refunded my amount yet. I was calling them from last one month and they are just reviewing my request and not taking any action. Their app policy is so bad that the amount is not refunded to source. They refund as z coin in their app only but in my case my amount is not shown as z coin also. Please help me to bring my amount.