Customer service

Yesterday I went to MTN in Carlton centre to purchase a charge for an iPhone I approached a lady with braces next to the door to assist me,she didn’t time for me as she was on her phone she then stood up with attitude dragging her feet and showed me the the charge and said “you see the prices their are expensive and besides these thing die very fast so u might as well go to iPhone store coz I myself bought two of them here but they died very quick” and u saw nothing wrong with the charger it looked fine it was written snug I just need a charger not attitude