Irctc — TDR refund delay 90+ days

Address:	Barpeta, Assam, 781319
Website:	irctc.co.in

I had bought a e-ticket bearing PNR No: [protected] [ Date Of Journey:29 Jul 2015 ] from an agent, unfortunately the train had been changed route of my boarding station AMBIKA KALNA due to flood. I had failed the journey and the money has not still got back from the agent as he said that the TDR has filed, money has not refunded till but why as it has passed 90+ days? train had not come boarding station, is it our fault ?