for myself i've come to the conclusion that for girls like Misty and Carmen you just have to realize that it comes with the territory.  These girls are REALLY hot and if you can get some time with them then you are lucky and they will make all the hassle worth it.  But you have to be prepared for things not always going right until that time comes.  I've seen them both and believe they are truly special but i've been dissapointed by their unreliability too.  I believe the good outweighs the bad though.  
as for TLC-- I suppose they must take responsibility but Taylor and the girls have always handled everything as professionally as possible and it is really the only agency I have ever had a good experience with or would recommend.
Just my 3 cents

I warned you about her before I even set up the appointment.  I also contacted you throughout the day letting you know that I was having trouble getting a hold of her.  You are the main reason she is no longer with me.  Does that make you feel any better??