Myntra.com — Refund not got and not getting help to update account details

I had purchased a Here and Now men Navy Blue bomber jacket from Myntra app order Id- 119402541320492808401 and due to fitness issue I had returned it and same had been picked up but I haven't received my money back. For this I have contacted with Myntra customer support executive they replied that you have to update your account details on orders section of Myntra app. And when I tried to update the same then it showing error there. And when I contacted to customer support executive they replied that try after some time but there is not any improvement on that and I haven't got my refund. So please help me to get my refund.