Oriental Bank Of Commerce — Payment made to myntra through payzapp while the order wasn't placed actually but the payment got debited

I made a payment of ₹2035 to myntra through my debit card linked to payzapp on 27th October, 2020 at 03:36 p.m. but the order wasn't placed actually but my payment got debited. And it's been more than two months and i still didn't receive the amount. I emailed to payzapp and they replied that the refund transaction initiated by them is void and I should request my bank for a chargeback. The refund reference number provided by payzapp is 30003903010301151375077. I visited my bank several times and also emailed them but still no help.