I'm so sorry to hear this. It sounds like she knew what you were talking about but did her own thing anyway. I certainly would have discussed the cost with her since she didn't do as you asked. $50 to ruin your hair?!

I don't have any suggestions on the yuck removal, other than a good strongish (sulfate) shampoo. And then maybe a nice relaxing DT. Hopefully you can let your hair grow out a bit and then get those layers blended in better.

SF Bay Area, CA * "The Angel-Goddess-Guru of Haircoloring"
3b/c/a mix. medium texture, low porosity
My Motto: Strand Test! some hair pics
-- gone, but never forgotten.