When I was switching careers I looked into one of the IT schools. They looked nice and promised me a decent job with decent pay. In exchange, I'd need to pay a percentage of my future salary. I said ok, and signed the papers.
Little did I know they offered a course that was available for free and "exams" that were conducted by students that have finished one chapter more. Saw a lot of bullying and left this mess before finishing it without paying a dime.
Got a job that actually lied in between the career I pursued previously and the career that was offered by this "school". In some sense they've helped me, and to this day I'm ashamed that I haven't paid them anything.
I also took an airport taxi that costed me ten times a usual cost.