If this was PF Chang's, I would definitely send an email via their Web site. A few years back one was opening across the street from where I worked. Their 2 huge horses were actually sitting in our parking lot for a short time. Anyway, I sent an email asking when they were opening and if I could be one of their customers when they did their soft opening. I received an email back from the President of the company telling me the opening date, apologizing that the soft opening was for family only, and then followed up by sending me two gift certificates to the restaurant to use whenever I wished. Wow, I was very impressed! That being said, I really think you should relay your story to them. Here's the address:
http://www.pfchangs.com/commentsweb/
No one should be treated like that. To think, you actually paid good money for that dreadful experience!