This is exactly the reason I started https://instajob.biz I have had nothing but bad experiences with them (with the odd exception of course)
I am not sure what it is like in the rest of the world but in my experience, in the UK, they really don't give a damn about you: You are a number to them and they will say whatever they can to get you in the door.
I have a few friends that work in recruitment (or used to) and they paint a worse picture than that.
I do not trust them, nor do I know anyone that likes dealing with them.