Msrtc — refund of my ticket cash back

Address:

Mumbai City, Maharashtra

I have booked msrtc SL bus ticket on16/05/2015 for the bus from Borivali sukurwadi to Satara for the date-16/05/2015 timing 22:00. But because of my relatives death I couldn't go by that bus. Please give me my cash back My ticket no.21079660