manager assault client and at spar

I send my sister to spar to buy somethings for the house and she forgot to her phone on top of the till 5. When she realized she quickly went back to report and didn't get any assistance or cooperation from staff. We then started calling the manager as we instructed my sister to stay there and not move as the phone was there and wasn't being pick up. They refused to show her the camera claiming that at that time the camera wasn't working for that particular till, this was around 16:25. Finally my other sister and I got ther after telling the manager that we have traced the phone and it shows its in the store. Immediately the phone started being engaged as sign that it was being dropped as we called. Minutes later my sister who lost the phone called and said they gave her the phone, this is now when we were inside the shop. I tried to speak to the manager about their how they were not of assistance and cooperative to get us to locate the phone and he started raising his hands at me and telling that I must apologies to his staff and stop with my speech. In the end he was pushing me and my sister who was holding my 3 year old. He hurt my sister's finger and my child is traumatized