Indian Railways — train delayed by more than 12 hrs but ticket not refunded

Address:

Patna, Bihar, 800006

Dear sir
I bought a mail express general ticket for 3 adults and 2 children worth rs 480/- at akbarpur (Up) on 25th sept from akbarpur to patna jn for patna-kota express or farakka express whichever would have come earlier, but unfortunately both the trains got unduly delayed for more than 10-12 hrs, i cancelled my trip and came back by car. When i tried to cancel it at the ticket counter they told tickets can be refunded within 3 hrs of purchase. Where is my fault, i waited for 4-5 hrs for the trains and after getting clear position o[censored]ndue delay i wanted to cancel it. The ticket no are 53203074 and 53203075 purchased at 10.35 and 10.36 am respectively separately issued for children and adults on 25/09/2017.
I am in a loss of rs 480/- without any fault from my side.
I request the authorities to kindly take action to get my money back.