Indian Railway Catering & Tourism Corporation [IRCTC] — TDR status repudiated

I had booked a ticket from Mangalore to Delhi in Rajdhani Express(12431) with PNR [protected] (date of journey[protected], general quota, 3AC, Ticket amount rs.3075). But due to some personal issues i was unable to travel and i filed a TDR against my confirmed reservation with cancellation id [protected] on[protected] by the reason: Passenger Not Travelled. I can file a TDR within 30 days but the status of my TDR complaint has been repudiated and the reason for TDR Registration Failed: Invalid TDR Timestmap : CNF . TDR Zone :Northern Railway (NR) I want to get the details of it asap. Acc. to my information i have right to get my refund back if not fully but partially atleast because i haven't travelled with the ticket. Thanks Regards Bhanu Priya Sayal