95% are bait'n switch by third party advertisers that try to get in on legitimate providers and then take a cut of the proceeds.
Their are a couple legit providers in Waterloo (off Northfiled and near Laurier U.), but the pics are never accurate. But you will get service for sure.
The only really good legit is mystery girl. Search leo with "sexywitch" and it will tell you all the providers at their Cambridge, Guelph, Waterloo locations (and london and windsor too). The Kitchener location is currently under renovation. also a Milton location but won't come up with a leo seach on KW/G/C.
Typically, pics are real, Sometimes the pics are not exact, but almost always a good resemblance. Use the 9070 phone number you see in most of the ads to arrange. Although the other numbers in a legit sexywitch ad should also work. Be aware, unless you insist on the girl you booked when you get to the door, they always rotate which gilr answers the door, so you could get the other one that was part of that advertisment. just accept the other one (often good as well) or politely ask for the one you booked. Just might mean you are getting her immediately after another session. Cambridge locatoin almost always has very good ladies and is a bit more 280/hr for that reason