They don't adhere to their trading hours

I went to chicken Licken Musina yesterday at 21:15 & they were closed. Their trading hours state that they close at 21:30. I left as I thought they may have closed slightly early for a good reason. I then left. I returned today at 20:25 and they were closed, trading hours state that they close at 21:30. I now have to resort to debonairs as they are still open. This is unacceptable and should be addressed. Either they change their trading hours or they stick to them. I'm really annoyed by this.