The best: Call the kidnapper’s bluff...lol
Funny story. An old coworker of mine was really good with languages, and one of the ones he was learning was Russian. While he was visiting Russia, he got picked up by the local police, supposedly some problem with his papers, yada yada... Once he figured out that it was a simple shakedown (the police van was basically driving in circles), he then proceeded to
haggle with the cops over the price of his "fine"! In Russian, of course :)