Southern Railway — refund not received after cancellation the ticket.

Address:

Burhanpur, Madhya Pradesh, 450331

I Ankit Shah PNR NO[protected] train no 11093 DOJ 07/01/2018 from Bhusaval to Burhanpur comes under Central Railway booking done through PRS Counter Burhanpur Station on 17/12/2017 by POS machine. I have cancelled the same ticket from Chennai Central Station on 06/01/2018 at 8:52Am for which refund of 635/- had initiated to credit back in my same account. But till now also no refund is credited back in account. When I enquired the same from Burhanpur PRS Counter they told that we don't know regarding refund issue, you should contact IRCTC customer for refund status and same I have enquired from Customer care he told that the details you will get from 139 and same thing I asked to 139 they told that you should inquire from PRS Counter Burhanpur.
After this discussion again I have revisited the PRS Counter they told that as you cancelled the ticket from Chennai you should inquire there only.Now I want who will refund the money back.???
Or should I inquire the same from Railway ministry or through Consumer forum.??