Apsrtc — Bus cancelled but money not refund

Address:	520001
Website:	www.apsrtc.gov.in

I have booked ticket from Tirupathi to kadiri on 19-Oct-2015. apsrtc cancelled the service which i booked, how to get refund from the apsrtc. my ticket details are Merchant Reference Number : [protected] EBS Payment ID : 43612257 Ticket No : 46388988 Uid Number : 4459 Service Code/Name : 6798 / NLR - HDP From : TIRUPATHI To : KADIRI Date of Journey : 19-Oct-2015 No. of Seats : 1 ( Adults: 1 Children: 0 ) OB Ref. No : [protected] Basic Fare : 162.0 Reservation Fee(+) : 10.0 Service Fee : 5.0 Levy Price: 1.0 Total;178 please provide me information