Indian Railway Catering & Tourism Corporation [IRCTC] — tdr repudiated

I booked two tatkal tickets from irctc app.
1 ticket is confirmed and another is in waiting. After the chart preparation one 1 ticket name is available in the chart so. Only one person was travelled.
I mentioned reason for claiming refund is "party/family ticket partially confirmed and wl/rac passengers did not travel".
But my case is repudiated.
Tickets details are :
Transaction id - [protected]
Pnr - [protected]
Train - asr kir express (15708)
Booking date - 17 mar 2020
Traveling date - 18 mar 2020
Class - 3a
Boarding - ludhiana jn (Ldh)
Destination - kanpur central (Cnb)
Passenger 1 - gurmeet singh confirmation b1 14 upper
Passenger 2 - manjeet kaur wl/1
Total ticket fare - 2800
Payment method - paytm wallet

Tdr details -
Tdr date & time - 18/03/2020 10:47 hrs.
Case registration date - 24/03/2020
Case registered at - north east frontier railway
Status - case repudiated.
Repudiation date - 20/04/2020
Repudiation reason - ticket not surrendered upto 30 minutes before the scheduled departure of the train.

This is online ticket how can i surrender this.
Please help me.