I was dining in your restaurant Chili's Heliopolis on Monday Aug, 3 with my wife. It was about 1:00 PM when a very rude guest (female) near my table was complaining about the prices and she started to shout and to say very rude words which my wife heard clearly. She even caught the server from her t-shirt and started to insult her with words that I cannot say. I was very surprised about the server's behavior who was insulted very rudely from the guest and she was very polite and diplomatic. That server was facing a problem that she didn't make and she didn't keep apologizing to that rude guest who insulted her and her family. I was more surprised about the behaviors of the managers who were present and they didn't even try to defense that server or to apologize to that rude guest. I am a regular client in Chili's in Egypt and USA, but I never had such situation before. I really recommend you to choose a better quality of managers who can solve such problems if you want to keep your good image and reputation as one of the best casual dining restaurant as you say.