Unprofessional staff and very poor customer service

I bought 2 devices at pep in centurion Mall onthe 19th of December and we experienced technical issues on both of them on saturday.i made sure that I monitor both phones and they're not working properly and took them back to the store for assistance since they still under guarantee.I was assisted by the lady Marble and I left the phones with her and the manager.when I went back to the store the staff member by the name of Mpho gave me an attitude as phone's were handed over to her.foremost she treated me like someone who's mad just because I work around the mall and told me that there's nothing wrong with the phones and she's not even technician to assess the phone's.i didn't mind if phones were booked for assessment or being talked by the manger with the good manner but I had to deal with unprofessional staff member who doesn't have a good approach for customers.I left the store without phone's because I felt disrespected as a customer.