Indian Railways — tdr not filed by irctc to sbi buddy.

Yesterday I miss train due to destination change by railway in Sewagrame Express .I book ticket from SBI buddy .while cancelling ticket SBI buddy refuses to file TDR .and told me to contact irctc.Whie irctc not shown my book ticket history. How I can get my money Refund back ?
Plhelp me ..as no reply received from SBI buddy & irctc also.I paid money to railway
But Refund not get.
I need my refund back.my pnr nose are.1)PNR-[protected]
Trn:12139
Dt:[protected]
Frm KYN to AK
Cls:SL
P1-S9, 67
P2-RC, S9, 23
Chart Prepared
2)PNR:[protected], TRAIN:12139, DOJ:29-08-17, SL, KYN-AK, Dep:15:58,
RITESH SHIRBHATE, RAC 45,
Fare:340, SC:0.0+PG+INS+AGENT CHGS, IF ANY

Pl help.