Sounds like an ordeal and I'm so sorry to hear you didn't get what you wanted and that your hair suffered damage.
When I have negative salon experiences, I take advantage of written communication. Sounds like you've already started that ball rolling by telling your story on Facebook and in this thread. You can also go to sites like Yelp and repost this review there. You can even repost this - in case you haven't already - right here under the Salons section (under reviews).
Thankfully, hair grows back. Also, good on you for persisting until you got your money back.