Most of the "camps" in Wadi Rum listed on the Internet don’t actually exist. Their “owners” together with the help of their girlfriends, who write and speak good English, create a fake website and post a lot of self-promoting reviews in order to attract naive tourists. As a result, travellers find themselves in trouble and get scammed.
That is why, before going to Wadi Rum, insist the desert camps on sending you A SCANNED COPY OF THEIR LICENSE, as 99,9% of them don’t have any.
Have this in mind before booking any tour, too, and never let anyone persuade you with boasts.