It disheartens me that I see a BUNCH of generalizations in this thread that don't always ring true. My favorite stylist works in a Dominican salon, and while I have to say that the other girls aren't as skilled with 3c and type 4 hair as she is, there is no washing hair with dish soap or any of the other things I've seen in this thread. You don't have to be disrespectful and spread falsehoods just to get the point that you don't like their salons across.
Anyway, I'm glad you had the guts to get up and leave, OP. I have been going to the Dominican salon since I was transitioning, and I have never had any issues with any of the stylists doing my hair, so I know what you mean about having that expectation of not running into trouble. Sure, there are times when I get stuck with the "new" girl and she charges me $5-10 more solely because I am natural, and it's funny how sometimes I get charged the long hair rate and sometimes I don't, but I have never noticed that it takes longer for my hair to be set than anyone else that comes in there. If someone who had relaxed BSB hair and I both sat at the shampoo bowl at the same time, we'd probably leave the salon within a few minutes of each other. The only time I have felt that anger bubble up is when the light skinned 3a stylist looked at my 4b little sister like she was some sort of four-headed creature, then asked if she wanted a relaxer. My fave stylist quickly came over and rectified the situation by pushing the incompetent stylist out of the way (all while cursing at her in Spanish) and doing my sister's hair herself. Instead of rollersetting it, which seems to be what confused the girl, she had to bantu knot it to stretch it, and it was then that I realized the first girl's lack of experience with 4b natural hair is what made her screw her face up, not any type of prejudice or laziness. Some stylists, Dominican or American, are not that experienced with natural hair, but they should have just said so instead of making it seem like YOU had the problem.
So what happened? Did you end up going somewhere else? Did you do your hair at home? You can't leave us hanging without pics!