Mike Auto Sales dishonest place West Palm Beach, Florida

Around five month ago I gave a salesperson by the name Julio Hierro 18,000 dollar to buy three auction cars, this guy work at a dealership in west palm beach call Mike Auto Sale ,the buy was done and the cars came under the dealer's name which they later gave me the title for two of the three,the third car was sold by the dealer and I never received possession of the car neither the amount of money that the car was sold by the dealer. I went to the dealer two month ago to ask for my money or the car and the owner told me that the sale guy Julio Hierro that sold the cars to me does not work for him anymore and that he (Mike) will try to get my money back or a car  of similar price that Julio Hierro have in the dealer possession. When I went to talk to Mike ,Julio was having a lot of about 10 cars which have to be process by the dealer to change title,Mike told me that he will arrange the paper work to give me one of those car since he have the title and ask me to give him time, well two month pass by and the dealer owner does not answer my calls, apparently he use this time to sell those car, the lot when from 10 to three cars,this is the only resource that I have to get my money back since this guy Julio Hierro disappear.I need  to complaint about this ganster that operate from this dealer

Mike Auto sale
8000 s Dixie Hway
West Palm Beach Fl 33405