Also, I'm not sure if you've been advertising as an escort long, Bee, but it won't be too much longer before you've seen more "New Escort Advertising Site Pay Now For Discounted Listing OMG!!1!" spam than you can shake a stick at.
My policy is to regularly (erm, well, every 3 months or so!) run some Google searches ("independent escort [your area]", "independent escorts", "[busty/mature/blonde/curvy/etc] escorts" and all sorts of variations and combinations thereof) and make sure to register on any directories that show up on the first page of results. Of course, double-check that they aren't just spammy crap sites but if they're in the top search results for, say, 6 months, it's a pretty safe bet that they aren't just for hosting porn ads or whatever.
All these new directories can shove their "Front Page Listing Only ?150 Special Offer FOr YoU OnLy!1!!" spam up their arses; I'm not
paying to be on a crap directory no clients ever look at (because they barely show up on page 1,504 of Google) when you can be on much bigger and more important directories/listings sites for free.
Their ever-more-annoying methods of spamming are a right pain, as well. They'll phone, text and email you and like any spam, if you respond it only gets worse. Quickly mark this stuff as spam and block & trash it.
You can also find out where most of your site hits are coming from using Google Analytics (pop that into a Google search if you fancy checking it out) - if you suddenly do get 1,000 hits in a day (AND at least 100 appointment requests - argh, lol!) from crappyescortsite.com then maybe it's worth considering. But, well, even if this happens it means crappyescortsite.com stole your details and added them to their site to make it look better without your permission, so that's not a good sign.
Same as successful escorts have no need for spamming or touting for clients, neither do successful directories. In fact, I hate any sort of advertising like this - if I decide I need a photographer/male escort/plumber/pair of shoes, I'll go and find 'em MYSELF, for god's sake. But that's just a generalized grumble and not particularly to do with anything.