Corporation Bank — Money not refunded back in last one month.

Address:

413705

I shopped from myntra using phonepe to pay. Amount of rs.1213.10 was deducted from the account but transaction failed. I complained to both myntra and phonepe. After showing them my bank statement for not refunding, they both are requesting me to file a charge back form, but corporation bank doesn't have that facility and when asked they said after the transaction is done, bank has nothing to do with it. And both the companies are requesting me to send them the charge back form. Please help me through the further process.
Utr - p1704160307496482796048