Indian Railway Catering & Tourism Corporation [IRCTC] — Refund not given after filing TDR for waiting tickets

Address:	Bangalore, Karnataka, 474020
Website:	irctc.co.in

I have booked ticket for me and my family (total ticket 3). On the day of journey only one ticket went confirmed, so I have canceled my plan of journey and filled the TDR for all the three tickets (1 confirm and 2 waiting).
But till now I have not received my refund amount. Railway is declining my request by giving another reason. I have tried to reach them on mail/twitter but not getting satisfactory answer. Below are all the details:
Ticket Details

Transaction ID : [protected] PNR No. : [protected] Train No. & Name : 12780 / GOA EXPRESS
Date of Booking : 15-Feb-2016 Class : THIRD AC Quota : GENERAL
Date of Journey : 19-Mar-2016 From : GWL To : PUNE
Boarding At : GWL Date Of Boarding : 19-Mar-2016 Reservation Upto : PUNE
Scheduled Departure : 19:45 Hrs

Passenger Details

Sl. No. Name Age Gender Status Coach Seat / Berth / WL No
1 NITESH 30 Male RLWL 7
2 ANTIM 27 Female RLWL 8
3 SUBHASH 65 Male RLWL 9

Fare Details

Distance : 1283 KM
Ticket Fare : Rs. 3925.00
Service Charge : Rs. 45.80
Total Fare : Rs. 3970.80 *

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TDR request:
Dear Customer,

We wish to inform that your request for refund against PNR Number [protected] for reason "Party Partially Confirmed/Waitlisted And All Passengers Did Not Travel.", has been received and the Reference No for this is :[protected]

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Refund status:
REFUND STATUS

Ticket/Journey Details
Registration No.[protected] PNR No. [protected]
Journey Date 19/03/2016 Class 3A
Train No. 12780 Train Name GOA EXPRESS
Station From GWL Station To PUNE
Boarding Point GWL Reservation Upto PUNE
Ticket No. 0 Quota E
Date of Booking 15/02/2016 Total ticket fare(Rs.) 3925
Transaction Id [protected] Pass/Warrent No. 0

Passenger Details
Name Gender Age Book Status Current Status Conc. Code Quota Refund Claim Reason
NITESH M 30 W/L 7 B1, 14 RLGN AC FAILURE

TDR Details
TDR Date 21/03/2016 00:37 TDR Filed at Stn

Registration and EDR Details
Case Registration Date 25/03/2016 Case Registered at Office SOUTH WESTERN RAILWAY
Dealer Id UBLDAVID Dealer Alloc. date 26/MAR/2016
Top Sheet Generated YES Topsheet Gen. date 26/MAR/2016
Assigned to Inspector Id Report Submission Date
EDR Fed Date Refund Status REPUDIATED

Refund Details
Refund Repudiation Date 01/04/2016 Refund Amount (Rs.) 0
Repudiation Reason TTE/GUARD CERTIFICATE NOT OBTAINED/SENT