Myntra.com — amount deducted twice

Address: Shimla, Himachal Pradesh

I made a purchase worth rs 2376 from myntra on 23 sep 2109 for which the amount was deducted twice. Firstly when i did the transaction myntra didn’t give confirmation regarding the order placed. I again made the transaction through my card and conformation was made by myntra but my account was debited twice. Bank on the other hand is saying that this is pos terminal dispute, saying that amount is credited twice to sellers a/c.
I want my refund of rs 2376. Kindly do the needful at the earliest.