Indian Bank — Myntra refund of RS 1249/- not credited to account

One order was returned in myntra dt-02.08.2020, order id[protected]-2087509, it's been more than one month I have not received my refund in account yet, myntra customer care has informed that refund has been processed and given one reference no[protected].
Kindly credit my refund AMT to my account or otherwise give suitable no so that I can register my complain there, it's already one month passed, this kind of service from myntra is not accepted.