You would expect a restaurant to maybe give a damn about what people think. I sent an email to them, right after posting my review. If you are interested in getting/keeping customers, you might consider replying to an email, with an explanation, and apology... anything. Shows me you think a lot of yourselves, that you don't need to worry about an individual client.
Considering the restaurant was empty on a saturday night, I might reconsider that position.