Punbus — non refund of ticket fare

I have booked my ticket for[protected] and the ticket was also confirmed.
But next day i got the mail that my ticket has been cancelled as bus route has been cancelled.
Till now i have not received my refund back.
Please refund the money asap.
Details are below:
Ticket no:[protected]
From - delhi to ludhiana
Pnt:[protected]
Amount: rs734