Myntra.com — I had cancelled my order but I cant received my refund

I had cancelled 3 order for which i paid through PAYTM UPI .Its more than 45 DAYS and the money is not reflecting in my bank account.I called them and they told me that the refund has already been processed from their side and if its not reflecting in your bank account kindly get in touch with your bank customer care.They provided me this .reference number is[protected]
Amount- Rs. - 1240.00 - Bank reference number is[protected]
Amount- Rs. - 1225.00 - Bank reference number is[protected] told me that your bank support team will be able to trace the transaction and will update you regarding the same.They also provided me this link https://cms.onlinesbi.com/CMS/ for registring online complaint.I registered complaint with the Sbi but after few days i got replied from sbi that no such payment had been recieved from myntra.Again i called myntra customer support and they are just repeating the same thing refund has already been processed you get in touch with your bank.If you are refunding money its your responsiblity to track the status of your refund and if the money is not credited its your responsiblity to check why its not credited.Bank is saying no such refund has been initiated by you, you are saying you have refunded then where money has been stuck electronically.I was a very big fan of myntra but after this experience i have lost faith..from last 45days i am just calling Sbi and myntra but sbi is saying myntra has sent you money get in touch with them, myntra is saying we have sent you money get in touch with your bank.Horrible experience