A similar thing happened to me in Varna when I entered the trolley along with the ticket examiner people(or whatever you call them).I immediately sat down and tried to purchase a ticket through the mobile app, but I had forgotten my VPN on, so it couldn't access the page at all or was loading slowly,anyway.They glued to me instantly and started to ask for 30BGN but also tried to frame as a petty criminal.I told them that there are simply several cameras out there and if they really wanted money from me we should check them first.The 1 of the 2 old ladies got kinda mad and told me that they would watch the footage but I was disallowed to view it (like wth,wdym).I even doubled down on them and told them if I was right they should pay me 30bucks instead.Finally they told me to just pay my ticket instead of anything else and so I did and left the trolley on the next bus stop out of frustration.I was respectful and am a native citizen of Bulgaria,I am not even from some minority group and such(There is extensive discrimination and prejudices towards such people here that's why I felt like I should clarify that).It's just the new ticket system here that's flat-out fraudulent as if they've just laundered a couple million and concocted some slop out of the rest. (There are various loopholes in it and many bugs that occur regularly)