Lazy "Technicians" who don't know what's wrong.

So today we went to the vodacom store at the pavilion mall. I went through to buy memory cards, and we were helped by Antonio who was really helpful and friendly. My mother was with me who then asked if he could assist with checking her phone as she had a problem with the memory card and he referred her to tech support.... we get there to this girl and this horribly unfriendly man who was absolutely lazy and ***********... the girl was trying to assist whereas the man whose name was Jonathan was absolutely rude when she asked him what could be wrong with the phone he was busy playing a game and just said he doesnt know.... if you are a technician how the **** do you not know what is wrong with a phone? After 10 minutes my mother was so annoyed she said she needed to go and I went back for a business card to complain and then we got to speak to the manager who could only say sorry.... terrible service.