I gotta say, I have no complaints with Macaroni Grill.
This used to be one of my favorite places to eat, and we went one day a few weeks ago, and it wasn't good. The food was overpriced for what you got, the service was terrible... so I submitted detailed feedback.
I got an immediate response from the regional manager apologizing, promising that they were returning back to their roots, so to speak, and enclosing $20 in gift certificates to entice me to try it again. Well, we went back about two weeks later, and sure enough, it was a totally different experience. Awesome service, new menu (back to the classics), yummy food, sensible portion sizes. I took home leftovers! So I wrote them again to tell them how much our experience had improved, and they sent me another $10 in gift certs for the positive feedback.
I couldn't be happier... the way they handled all of this puts them back at the top of my list of favorite places.