As recently as a year ago, I would listen to Dennis' voicemail (he is too stupid to figure out how to change his vm access code I guess) and the messages he gets daily from people he has stiffed are some of the funniest things I have ever heard. If you want him to call you back, the best chance you have is to threaten him and tell him you are going to kick his ass. He is a freak and never backs down from a fight or so I have heard.