Myntra.com — refund transaction initiated but amount not received

Address:

Bangalore, Karnataka, 560102

Myntra has initiated refund to my bank account but it is not credited to my account. I had follow up with the bank and they tell that transaction id id wrong and myntra customer support people on call do not provide any solution for this, they tell refund has been initiated and it is the bank whom we should contact. Amount is 563.88. Transaction id is 74766518285840500354001