What would you do ??

Ok heres the story ... I got a barracuda back in september ... Needing some parts i post a reply on a members ad... Turns out he local .. I go to his shop spend an hour or so there.. bought a antenna bezel and nut, washer jug and some grille pieces ... i ask him how much for the emblems on the barracuda outside.. 30 bucks ... I pay him go grab my tools and take them off ... come back in talk some more ... go back outside help him and his son take out the windshield and walk around the car asking him questions... NOW months later i get a PM here saying i owe him for the other side emblems ???? One is even broken and he wants another 15 bucks ??? I thought i got at least one deal from him ... I mean the emblems have paint on them and are pitted and now he wants more money???? What would you do ???