A stranger on the street took me to a bar where I was charged a huge amount of money.

If you go into a bar that a stranger or someone the street takes you to and you are charged a lot of money, it is very difficult to get your money back. (If you try, you could even get involved in more serious trouble.) Go as soon as possible to the police and get their advice. If you paid by credit card, just in case, tell the credit card company about the incident.