Washington DC
She didn't like the looks of me, and didn't open the door when I arrived [after I called for the room number and was told that she was ready] 
...I guess I was too young (31)...or too black...*shrug*
No, not joking at all. It happens. I made the appointment well in advance, passed the screening, and spoke to the answering service yesterday to confirm.
I called when I got to the incall location, and they told me to hold while they checked with her to see if she was ready. I was told that she was ready, they gave me the room number and told me to go on up.
I got there, knocked...no answer. I called the guy back to confirm the room number, he tried her again, and came back and said "it's not gonna happen today...."
I strolled on out.
I am a fairly attractive guy (not like it should matter all that much under the circumstances)...5'11'', 185 lbs...I did well in "real life" before situations changed that now require more discretion that the club scene would allow.
But it might not have been race...it might have been age AND race.
Depending on what day it is and how I am dressed, my "guessable age" can fluctuate. Today I was wearing jeans, a collared shirt, and a pea coat...freshly showered, with a light splash of cologne 
Perhaps she prefers older clients. It has happened before, although usually on the phone prior to, as opposed to from behind the other side of a closed door.
But no biggie...I wish her the best, and based from her reviews, she is a favorite, and I hope she remains that way...
I left $$$ heavier in the pocket than I intended, and my daily conscience meter didn't take that extra hit...I just wish I had known in advance. *shrug*
Who shouldn't bother. A black guy, a young guy, a guy with one eye. You definitely have the right to choose, buy why waste anyone's time. You look hot and are well reviewed, but if I fit in a certain group maybe I don't want to waste your time.
The people want to know. (Because you ARE that hot). 
.