Bangalore Metropolitan Transport Corporation [BMTC] — forgot to collect change in vayu vajra airport bus

Hi team,

Boarded vayu vajra kias 6 route bus from airport @ 3:00 am on 15th feb 2020 (Today) and gave 500 + 6 (Coins) rupees for a ticket of rs. 256 to domlur bridge. Since the conductor dint had exact change initially, he gave 200 and asked to collect 50 later (Wrote behind the ticket) but since it was night and i got down at once since the stop came, could not collect the change. Even conductor forgot to give same. Kindly tell how to collect back 50 rs. Change.

Bus number: ka 571 1173 (Kias 6 route)

Uploaded the ticket for reference.