Myntra.com — refund

I purchased 3 items from mytra and returned them and waited for 10 days for the amount to be reflected in my account but it didnt. When i asked the same to myntra, they informed that the same have been initiated by them and it completed and provided me with bank reference numbed which is their legal proof that it has been completed from their side. And when i contacted the customer care of the indian bank, they asked me to give them unique transaction reference id (Utr) from mytra and declined to help with further with it. I was unable to file a complaint on their website (Indian bank) as its not working.