PRTC — refund not yet received for cancelled bus

Website: PRTC

I booked my ticket for prtc hvac from amritsar to patiala for date 8/9/2017 departure timing 2.05 pm with pnr no p259562. The ticket was confirmed but the bus was cancelled because it had met with an accident a few days back. Though, i was assured that i will recieve refund within few days, i havent yet.
Its the fault of the bus operators that if the bus was unavailable for past few days they should have prohibited ticket booking.
Secondly its negligence on the part of prtc that they dont care about the hard earned money of people.
I wish the matter gets solved at the earliest.