Indian Railway ( Irctc) - Refund for cancelled train

I had train ticket booked from ADI to MMCT on *th August in train *****. The train started from Rajkot. That particular day the train strated from Rajkot and terminated/cancelled at ADI and hence I couldn't travel.
The following day I sent mail to irctc to have clarity on refund issue as the refund rules didn't specify the case in which train is partially cancelled and the passenger doesn't board the train at all. Ideally the customer should get complete refund automatically as train was cancelled and we didn't board the train only. But I am not getting proper support from Indian railways as they say that as per their records the train was diverted and not cancelled and I must file TDR. I had initially contacted care@irctc.co.in and when as advised by them I tried to file TDR I got only option for cancellation of ticket. Then they asked me contact eticket@irctc.co.in for this matter when I contacted them on Thursday they advsied TDR must be filed with ** hours from departure time and the time has already crossed. I told them my train is cancelled and I must receive automatic refund. But they told that as per their records the train was diverted and not cancelled and hence I must file file TDR but this is not at all true and train was cancelled and I must get full refund automatically.

Please help for this case
PNR number - **********