Myntra.com — here and now shirt 540 refund

I had placed an order on myntra on 25 dec 2019. I cancelled the order because delivery time is too late. I paid total amount of 598+540 for two products. I got only 598 in refund and they are telling that they have processed 540 also which have not received yet. It has been more than a month now still have not received my refund. They are asking me to contact goople pay team and source bank which can't find anything with this transaction.
I have shared the bank statement since 25 dec to till date still they are not able to help me with this.
Bankers are telling that there is nothing regarding this transaction.
It would be greatful if you could help me with this.
Registered mail: venky. [protected]@gmail.com
Mobile: [protected]