I once went through a BART gate line by mistake, I was trying to get to the trolley service and misread the signage. I immediately exited. The charge: $6.20. Still can’t believe it.
I walked off the train into a depowered station at night and couldnt scan off at the station, so I got on a bus and it depleted my card, then the next day I got a ticket for riding the bus without paying because the computer stole all my money and the guy giving me a ticket couldnt care less that I actually payed more than I should have but just kept repeating that I "should have had more money on the card"