Poor client and inappropriate behavior

I'm writing to complain of the poor service I received from McDonald's, Grey Owl on the 11th of August 2019. I visited this restaurant and I want to inform you about the inappropriate behavior of one of your staff member by the name of "Namaembeni'', according to the till slip. I arrived at point where by you place a drive through order. I waited there for about 5 minutes and no one was answering the voice order machine. After a while somebody answered and I placed my order. I then proceeded to pay point window to make payment. Again the window was closed and three staff members were inside busy talking to one another and laughing. I then decided to hoot that's when one of the staff members opened the window. I greeted him and told him that I'm not happy about his service. He said nothing to me and even not apologized about my complaint and even looked at me with an attitude. After making payment I proceeded to the next window to collect my order. After I collected my order I then informed the female staff member that was helping me to issue my order to pass the message to "Nemaembeni" that I won't keep quite about what he did to me but I'm going to report the incident. I then drove off. I will be happy if this matter can be addressed accordingly.