Welcome to the Forum and sorry you got ripped off with such a poor punt. It's a bad start but I suggest you take a bit of time to look through the information on the Forum, as there's loads of helpful stuff for new members.
Better luck with your next punt and I'd make a couple of suggestions:
1. Speak to the girl but give it a miss if she can't communicate clearly with you in English.
2. Don't spend too much money.
3. WALK (obviously before you hand over any money) if it doesn't feel right for you when you arrive.
The latter can be difficult to do when you're relatively inexperienced but you're spending quite a bit of your money. You'd walk from a shop if you were spending that sort of money and didn't like what was being offered, wouldn't you?