While I'm updating this.....I no longer just call a provider and jump right in. I watch an ad for a while ,make sure they seem established(same number,not changing it repeatedly ,similar area(s) ,kind of a regular pattern.) also look for "real" reviews (there are some fake sites).Then I usually call before I even want to see them to hear their voice or see if they seem psycho or if there's any other bullshit going on I may be able to detect.I'll leave a very cordial message if I get VM(my experience the pros have VM) and wait for them to call back when they are comfortable.
Then I pull the trigger when I'm comfortable .This has been successful for me time and time again especially in light of LE activities in the past year. Of course we all make mistakes along the way as you can read in some of my past reviews. #1 rule is 95% or more of provider pics are bullshit !! There are very few that put their real pics out there but I have seen a few of them on L.I. A few even look better in person,the exception ,not the rule.
A couple more observations/comments:
I have had such a miserable hassle of upsell ("touching your balls while bj is a fetish - and I change extra for fetishes", "you can only do doggie kneeling on the bed and not standing on the floor" and many other ridiculous upsell attempts) from out of town escorts that I do not call any anymore.
The "same number,not changing it repeatedly ,similar area(s) ,kind of a regular pattern" advice you give would have failed catastrophically during the "flush the johns" fiasco.
I have gotten best value and enthusiasm from Asian escorts that work a particular agency on LI. See my posts somewhere here for details - # ends in 3335 ( I am too lazy to look it up for you.) However, English language communication can be non-existent - which may not be a problem most of the time in that they tend to be too polite to talk with their mouth full anyway, good upbringing I guess.
Also some of the older escorts, lori, betty, to name 2, give enthusiastic, friendly , no hassle service.