Disrespected and defamation of character

I was at Tops this past Saturday making a purchase and Kgadi never greeted me and I told her that I realised that you do not greet your customers. Kgadi rudely responded by saying that this is how we operate pointing at a customer and he knows and you not a regular customer, the customer budged in rudely and used vulgar language and threatened me. The customer made a statement saying **** Hello Peter. I asked for Kgadi's name and surname which she refused to give to me and spoke to the manager who was just as useless as he refused.