Bad service

I brought school trousers for my daughter on the 8th if July and Mamelodi Denlyn Ackermans. So today I told my daughter to go and exchange the trousers because didn't fit her. I could not go to the store because I was at work. The staff members in the store where rude to my daughter and said she brought to the store old school trousers to come and exchange, one thing I do not understand is how can we bring old trousers for an exchange. They gave attitude and shouted her, they exchange the trousers and said the ly will mark them as damaged. When I brought the trousers it did not have a price tag, the lady at the store went to take another set to till the trousers. We getting ****ty services in these store. I called the store because my daughter was crying over the treatment and the manager Godfrey said he wasn't not sure why was my daughter treated in that manner. I want displace to be taken over the staff for ailment treatment to customers.