Poor service

I went to an MTN store in Menlyn Shopping Mall for a simple payment and to swap my simcard to a micro sim. First I was told to write my name down and wait. The consultants were just so relaxed and didn't show any interest in their work. I waited for 45 min and when it was my turn I was informed that they did not have micro simcard in stock and I was referred to the other MTN upstairs in the Mall. I fail to understand that I did tell them what I was there for. And They made me wait 45min to inform me that they don't have what I am looking for. And then I wanted to make a payment for my sister's cellphone bill and the person assisting me kept on talking with her colleagues first then when I started being annoyed and telling her I need to get back to work. Only then she started paying attention. The service there was disappointing they failed dismally to fulfill my expectation as my service provider.