Sorry to hear what happened. I'm curious to hear what bonker says.
Yes, it's best to avoid trouble..however I don't want to be robbed..
Which is why, you should A, use s punting phone and ensure your real name, address is not linked.
And B.. what I would of done, cos a similar thing happened to me over 15 years ago. Where girl was different then photo and refused to do anything on her lists, I wanted to walk away but a big man came from no where trying to threaten me..
I responded by laughing and warning the man, if he touches me, I'll call the police and that I'll be back with my friends to this address.
At that point, the man gave my money back and I happily left, but I understand if you would want to avoid trouble..