Who knows what really goes on there...  There are a few local indies that are like this (Belle on Eros, for instance) that have shelled out plenty of $$$ for advertising yet never take appointments.  I suspect with Belle and some others, it's a matter of only needing an appointment or two per month to help with the car payment or tuition...  One or two random calls get through each month but most end up deleted.

As for the Simone/Cassidy thing, I suspect you're looking at one of the "fringe" agency sites.  There are quite a large number of agencies around the country (like MNhotgirls) that follow the same recipe...  They advertise 5-10 girls between two cities, such as MN and Chicago.  Out of the 10, 5 are just plain stolen pics from other sites and they've never heard of the girls.  2 or 3 are really with the agency, but are only ever in the other town, and that leaves 2-3 that really are available--just enough to create the illusion of credibility.  But these agencies are still bait-and-switchers and shouldn't be given the air of credibility they sometimes get.

As for Kasha, there's plenty of material here on TER if you search enough.  Take a look at

http://theeroticreview.com/msgBoard/viewmsg.asp?MessageID=4398&boardID=21

Just one, but search for Kasha and a date range of 600 days and you'll find almost no good news.

A favorite post from quite a while back adds some insight too:

http://theeroticreview.com/msgBoard/viewmsg.asp?MessageID=3600&boardID=21

There is SOOOO much good stuff available...  Well known locals, lesser-known locals with value pricing, travelers...  There's just too much good stuff available to put up with providers who play the catch-me-if-you-can chase games, the new-name-of-the-week games, or the borderline-credible agency games.  If it takes some thinking to figure out who they are or what they're up to, that's a sure sign that you should move on.

I hope the providers that read this won't take this wrong, as almost all of you are in the "good stuff" category that makes passing over this other stuff worthwhile.