Gujarat State Road Transport Corporation [Gsrtc] — didn't get refund after ticket cancellation

Address:

Decor art, behind vishal furniture, morbi-2, Morbi, Gujarat, 363642

My complaint is about refund not received for ticket cancellation of gsrtc. Ticket information is:
Tripcode: 1300rjtunaexp51, pnrno: g26268433, journey date: 12/04/2019,
Departure time: 13:00hrs, seatno: 13, 14, 15, 16, 17, total bus fair: 636.00

And ticket cancellation details are:
Cancellation date: 11/04/2019
Time: 11.30 am
Refund amount: 488.00

Even after a week my ticket cancellation refund not received. I hereby request you to please credit my refund amount to my account.