Had the last bid on a ford explorer. Me and previo...

Had the last bid on a ford explorer. Me and previous bidder standing right in front of auctioneer. The auctioneer calls the other bidder over and tells him if he has 2900 he would give it to him. He then announces the car sold at 2900. I never got to bid again. How is that. The guy never showed a registration number. Dirty dealing.