Mobikwik — refund issue for the failed transaction

I have made an online transaction for ordering the food through mobikwik. But it was failed at merchant but amount was deducted from my account. But for refunding it was been more than 10 working days but refund was not made. I have approached the mobikwik chat support but not a satisfied response. Also, total there was three transactions failed but for two transactions they have refunded but for the third one no refund was made.