That's the conclusion I came to as well. Multiple missed calls from the same number within a short space of time has to create a bad first impression with an escort - think of the amount of time wasters & weirdos they have to deal with on a daily basis.
At best calling repeatedly makes you look desperate, at worst you risk coming across as a potentially dangerous pest.
If you really want to meet somebody in particular then it is best to plan ahead rather than leaving it until your penis has overthrown your cognitive capacities. The penis is not big on patience I've noticed, nor is it given to considering the wider implications of a course of action, not that this ever stopped it wanting to take command in certain circumstances; all in all it is generally best to pre-empt the wee chap. That said, life would be dull indeed if we didn't sometimes let him lead the way