Rude security personel

I went to this establishment on the 15th of March @13:26 hrs, upon arrival l went straight to the building marked upholstery as my intention was to enquire, l greated a gentleman who was wearing a black hat and a khakhi trouser who l was later told is the security at that establishment. The gentleman was extremely rude to me, he threatened to shoot me saying he suspected me to be a thief. His language was so rude using the F word when addressing a customer. The management has to send this old man for more training as he is not suitable for the job he is doing. I am really disappointed in the way he treated me. I drove all the way to that establishment to be humiliated by this aggressive guy.