Bad attitude towards my daughter and I by Olga

On the 11/09/2015 I went to Cell-C Eastgate Branch ton update whatsapp after failing to do it at home. Ricardo (sales assistant) assisted me as whatsapp was loading, Olga rudely approached him. Asking why he doesn't send my phone for repairs when he tried to explain that the phone didn't need repairs Olga then came to me with a piece of paper and pen. She shouted at me saying that the Manager (Andriana) sent her to get my details so that they can inform the Head Office that I have a problem that is insolvent because I am always at the Cell-C shop. When I explained to her that I come to the shop for different reasons she ignored that , continued to shout at me and I denied her my contact details. My daughter and I felt humiliated as the staff and customers at the shop turned around and looked at what was going on. We immediately left the shop. I have 2 contracts with Cell- C of 3 lines, been a loyal customer for about 10 years and I deserve better treatment. I can't go to Cell-C Eastgate Branch (nearest) anymore since the incident. My daughter and I need an apology from Olga after the trauma and humiliation she put us through for no reason. Otherwise I will not renew my contracts.