I do the same thing! A quick thank you and that I'm bummed that we can't meet. 8 out of 10 times, either immediately or a few days later they will hit me up with a lower rate.
I'm sorry that was your experience (or non-experience). I have had a few great meetings with him. He was punctual, very handsome and extremely engaging. In other words, he was a HOT fuck.
Oh, those Colombian boys! Beautiful to look at, but can be troublesome when meeting. Don't get me wrong, I have had some great meetings. but I try to proceed with a little caution.