I won a prize through a local photographer?

[G*Star]

trying to promote his business on Facebook. The photographer and I have mutual friends, that I see on a regular basis, so I know that it was a legit contest. Well the day before it was to end, he all of a sudden says he is canceling the contest due to cheating, that he has no proof of, just someone saying that someone was cheating. I called him out on it, saying the person cheating should be disqualified, so he writes back to me and tells me that I am right, and the right thing to do is to follow through with his promise. This happens on a Thursday, we make plans to meet up tonight to do the hand-off, I emailed him last night to confirm a time and place, but he says he can't do it tonight, we will have to do it tomorrow. I've since emailed him twice to set up a time for tomorrow, but I haven't heard back yet. What can I do if he doesn't follow through? I have screen shots of the whole contest, from him stating the prize, to all my votes, versus the other people's votes, and also the emails from him stating that I won. Can I take legal action, since he is a business, although small, and he promised a prize?