Domino's Pizza — refund for amount debited two times but order not placed

I had ordered a pizza on 28th february 2019 through dominos app twice from dominos pnm mall patna worth Rs 208 for which the amount got debited but order not placed.I had placed order two times but both the times order got failed but amount debited from my bank account. When I called the dominos customer care they told that to wait for 5 to 7 days to get the refund.Its already been 7 days but i didn't get any refund. I request you to consider this matter seriously and update me ASAP. Thank you.