Indian Railways — Non refund of tdr submitted on 26 dec 2016

Address:

208025

I have submiited TDR at kanpur central for PNR no [protected] for train no 22634 bengaluru rajdhani express class 3 A journey from agra to ksr bengaluru for four passenger amount Rs 10900/- reason for tdr is that system cannot refund.
At kanpur central i was told that refund will be made within 90 days but it is not made so for.
How much time it will take to refund.
it is requested to refund at the earliest.
email [protected]@yahoo. com
mobile [protected]