Round-Off scam to cover free women travel?

Hey guys I travelled to Madikeri yesterday, and happened to notice the Round-Off after the trip. As you can see, the payment was made through UPI and there's no real need to round off as that's one of the major advantages of using UPI.. That's not having to worry about Chillare. Reason for posting this here is.. Where does this amount go? What do they show these large round off Revenue as in the books? Is it taxed? Is a loop hole being abused here by ksrtc? Rs.4 might seem like a small amount, but that's unaccounted money from one person throughout the state.. Just wondering. Need insight.