Indian Railways — regarding cancellation of ticket

My name is deepsk sharma i have a scheduled travel on 17/07/017. As my train was late more than 7 hrs. I had decided to cancel my ticket and tried to get refund as the ticket was from counter i have contacted to railway station staff but he did not cancel my ticket even after many request. My ticket pnr no. Is [protected]. Train name is jyg anvt spl. So i would like to request you kindly refund my money and do needful against the ticket counter staff of madhubani station (Mbi).