Bank Of Baroda — refund from irctc on cancellation

I have booked train tickets from paytm app and pay through bank of baroda account. And then i will cancel the ticket. 15 days are gone yet my amount is not reflected. I complained in paytm, they told me that we have already initiated the amount contact to your bank and file a charge back against them. Please check how much time to get reflecte my amount.