Poor Service,rude and lack of Knowledge

I went to Ackermans Denlyn in mamelodi yesterday with my husband to buy a phone, we asked for assistance a guy came and fetched the phone we wanted it was a Hisense dual Sim for R649. He tried scanning the phone but it could not appear on the system to scan, he fetched three more to scan but the same problem. He called another lady to assist the lady name Tumi, he explained to her the matter she rep**** by saying there's nothing they can do because the phone's where shrinkage. She never even acknowledged me as a customer nor greet me, so I asked her why is the phone on display if they are all shrinkage. She rep**** by saying the person who is responsible for the phone department is off, so if a person who is responsible for a department in Ackermans is off the store will fall apart. I asked her who was the manager and she said the manager was not there and that she was in charge. When you are in charge you are responsible for the staff, departments and store. She was rude, did not apologise and just left. So we left without a phone and without a clear understanding, with my experience as Store manager if u receive new phone's and not acknowledge them on the system they will not appear on the system to sell. Im really upset with the service we got.