他的手机号留好了。

警察能找到，你也能。只不过不值。~$300 doesn't even worth you spend so much time typing.

forget it and move on.  we all felt cheated at somepoint of life.  spend your time elsewhere.

One thing for sure: never give your address out to strangers.  you can meet him at starbucks or grocery store.

i am afraid he might come bother you again. when it happens call police for sure.  and you can move.