G4S Security threatened to shoot me inside Pick n Pay Sandridge after he jumped the queue to buy cigarets and a cool drink.

I was standing in a queue at Pick n Pay in Sandridge Midrand today (8 November 2019) and a G4S security who was not carrying anything but a cool drink jumped the queue and I asked him why does he do that cause we all standing in the queue to pay; he then with attitude told me he doesn't stand in queues and there's nothing I or anyone else can do cause he will show us something we've never seen; I could even see the cashier was scared as he kept moving his hand towards his gun; I then told him that what his doing is wrong he then threatened to shoot me; further said he will wait outside for me and I'll see what he will do to me; When I got outside walking towards my car I saw him entering the G4S security truck. His behavior is unacceptable and I am going to open a ******** case at the SAPS against him or the company.