I am sorry you're frustrated about clients not seeming to get directions Violette. However, I must assure you that we really do want to get to an escorts place and therefore the perceived 'not being able to take directions', certainly isn't intentional.
I certainly find the directions bit the most stressful part on any visit to a new escort. This is partly due to what Brumo has said above. But in addition to this I find that I am usualy very excited and anxious at the same time. This of course is a bad combination for understanding and following instructions. I suspect most clients are like this.
So the next time some poor guy gets it wrong, please have heart - its only because he's so excited and nervous about seeing you. :)