Indian Railways — TDR not refunded - Falsely claiming that passenger had travelled

My PNR numner is PNR:

I had booked a 2AC ticket in train: SC DNR SPL (02791)
Journey: Prayagraj Jn (PRG) to Patna Jn (PNBE)
My PNR: [protected]
Fare: Rs 830
My Journey Date: 17 Apr 2021 | 10:20 AM
Original Departure time: 10:20 AM from Prayagraj Jn

As the train was late for more than 3 hours, I filed for TDR under section: Train late more than 3 hours and passenger not travelled.

TDR Date: 17 Apr 2021 | 08:17 AM

I got response from Indian Railways on 14th May that my TDR refund request was repudiated because as per chart I had travelled.

I did not travel on that train and I filed for TDR on time.
Please look into this.