RV consignment

I had my RV at a well known RV dealer in Pensacola Fl on Consignment.....I got a call from them saying they sold it, I was at work and in a meeting so within 10 minutes I called them back to tell them I would not accept the offer. Their response was sorry it is gone. A couple of months later I saw it in a camp ground and and inquired as to what they paid for it. It was twice what the dealer told me he sold it for.....He had charged me an up front and and when I got the check it was no where what I was told I would get.........SO DO NOT TRUST A DEALER....