Telangana State Road Transport Corporation [TSRTC] — Charging extra money from passenger

This happened to me two time in a row.
First they don't accept cash payment even after having change with them.
Then when we do upi payment it always gets debited from my account and credited to beneficiary, but the ticket counter person says it's not credited and then after that only he accepts cash and give the change.
Is this some kind of scam by the staff or the tsrtc itself to take passengers hard earned money this way