Accusing my daughter of damaging mobile phone

I purchased a Samsung Z2 from Pep Mobile in westgate mall Roodepoort. The phone was purchased for my 11 year old daughter for Christmas on Friday 22.12.2017. When we go the phone it was fine. On Wednesday she was out shopping with her Uncle. And when they took the phone out they seen the screen was off and the phone wouldn’t go back on. When they returned the phone to pep in westgate. The staff Named Patience and Thandekile traumatized my daughter with their interrogation and telling her she is lying she dropped the phone. How do you treat a 11 year old child like this and interrogate her?? What sort of service is this.

When we asked what the plan of action was for the phone we were told it will take 2 weeks for the Vodacom to come back to us. I feel this is unfair.

I would like feedback today from Pep with regards to this.