Myntra.com — didn't receive the refund

Address: 411021

I placed an order on myntra on 1st of october which was delivered around 4th october 2019
The size that i ordered was too large so i decided to return the order. My order was picked up on friday afterwards the refund was processed and amount is 796.95 on 12th october 2019. Then through a mail they said my bank info is incorrect so i shared my bank details but till date 31st october i haven't received my payment. I wrote down so many mails to myntra but they are not responding properly.
Kindly intervene