Just had friends return from an enjoyable stay in Budapest who decided to use the Metro system in the City.
Purchased tickets to their destination and on the return journey they went to the machine that stamps the ticket but wasn't working and at their destination there was an inspector who promptly fined them ��8 (each?) no English no discussion.
It would have been cheaper to use a taxi and when they spoke to other visitors some had had the same unsatisfactory experience. Incompetance................... or scam ?