Abusive manager at workplace

The PQ clothing in Greenstone, there’s a lady in management who the staff call Mamzo. That that is full of ****, has no respect for anyone. She mistreats customers but what’s worse was yesterday when I was in store. So there’s one of her employees who was asked by some guy named Greek to change the display on the mannequin…this Mamzo lady was not aware pf the change and whenever she asked who did it the staff told her then she started swearing in the shop. Calling this lady who was asked by management to change the display by names, saying in her words”Nqoli nqoli” meaning dirty thing! As to why people in management would abuse their powers I don’t know! And to disrespect your staff in front of customers is something else. PQ clothing in Greenstone needs to do something with this lady otherwise they will loose customers!!!