No Refund after more than 9 months of bus cancellation

Online ticket was booked on July 13, 2013 via Travelyaari for the travel from Delhi to Ludhiana on the same day.
PNR: 12665159-285039
Ticket No. 3331314276177
Bus cancelled on the stop.
Following up the same from last more than 9 months via calls and mails but getting no response.