Insult By Security Guard

I am very angry at the treatment I received from a security guard at the News Cafe in New town Junction (Johannesburg) this past Saturday (23 May 2015). I met with friends there in the afternoon and we had lunch and drinks. It was then getting dark (at around 6pm) and I went to the car park ticketing machine to check how much I owe, only to be searched upon returning to the restaurant. When I asked why I was being searched if I have been there there all afternoon, and the security guard responded by saying \this is not your house you will not tell us how to operate". I was shocked and asked to see the manager"