I'm all the way in Philly so I guess I cannot answer your "immediate" call but I second Kiley!
Ballbusting can be pretty erotic. The sense of being
utterly helpless at someone's beck and call is a high of its own.
I think I would caution against hiring someone who is "not a Dominatrix per se". In my experience, folks serious about BDSM also research a lot of health aspects of BDSM - that is, where is it safe to hit, what kind of impact causes what kind of injuries, what kind of injuries are superficial, and what can be long lasting, even fatal etc.
Don't try at home what you see on T.V kids! Same goes for porn! Porn makes ball busting very simple. It is not!
Other than injuries to your genital, ballbusting can also push a sub into subspace very quickly. Ballbusting causes so much pain that your body pumping endorphin into your body is inevitable. And endorphin pretty much acts like morphine. Subspace is often when you're high off of your natural endorphin. Would you want someone inexperienced around you hurting you when you're on morphine? No! The same applies for when you're high off of endorphin! Subspace can be powerful and people often lose the ability to safeword. So you definitely, DEFINITELY, need someone experienced in aspects of BDSM to be able to handle a scene SAFELY!
Anywho, I leave you with this picture. I have quite a bit of experience with balls, most of them attached to a human of course, and experiencing lots of sharp pain at my hands