Myntra.com — About Money Refund

Hi, this Manikanta Daruri. I had a Myntra account with manikanta.[protected]@gmail.com.
I was ordered three "The Indian Garage Co" products on 3rd March 2023 with the amount of Rs/-1416 (UPI Transaction id[protected] through G.pay.
After five minutes of my order placed, the payment method was changed as COD(Cash On Delivery). so, i was cancelled my order. but, i didn't get Refund of my money and Ordered Products too.
then, i was approach customer care, they said that, "Due to payment gate way issues, this problem is occurs".
Then, i was consult my Bank also, they said that, "the payment is successful and Merchant received payment."
can you please help me, what should i do.? or Please solve my Problem