MTN Employee stating that after trading hours she can insult and threathen me however she pleases even if I am a paying customer

MTN Kolonade store has the most disgraceful and diagusting employees ever. The woman not only **** about not being able to help me but later sceamed at me, threatened me, refuse to listen to me or give me a chance to talk and insulted me and accused me of lying and then told me she is justied to treat me like that because I was wasting her time. Never in my life have I ever been treated like that and to receive that as a paying customer I am completely insulted and victimized. I will open a court case to make sure someone like that never gets allowed to work in customer service ever again.