Myntra - Refund not credited to bank account

I had ordered kids thermal sets with order no.*******-*******-******* and *******-*******-******* from Myntra on **/**/**** of amount₹***.** each and returned them on **/**/**** due to small size. I had received email with return no.********** and ********** the same day saying refund processed to source I.e. bank, but till date I have not received refund for both returns. I contacted Myntra team via phone and they told me to send my bank account statement showing no refund by them which I did on **/**/**** and again called them enquiring about refund,they said that refund had been processed on **/**/**** by them with transaction no.********* and told me to file dispute at my bank PNB through the dispute filing link sent by them which I did with complaint no.********** on */*/**** and received feedback from bank in return on */*/**** to contact Myntra as they are not able to locate any refund from them.On contacting them by email and messenger they completely ignored me and did not revert back to me,hence I called their customer care no. Who declined to help me saying they have already processed refund inspire the fact I told them my bank has is unable to locate any refund from Myntra.Please help me get my refund back.
Suvidha Diwan