Well first of all, fame doesn't really mean anything in the game besides equipment requirements, unless you have hundreds of it. Even then, people are just gonna ooh at you and then forget who you are ten seconds later.
Second, it's a new world and you have to expect pricks like this. Selling/buying fame in game has ALWAYS been tricky business, as once one either the fame or money has been sent over there's nothing holding the other person to give you your part of the deal. Just roll with it and enjoy the game.