Unsatisfactory service and behaviour at McDonalds Tsakane mall

It's the 2nd time I've been experiencing such bad service from McDonald's Tsakane mall. I went there to get my breakfast before work and for the 2nd time my order took long and when it arrived my cappuccino was not there and the lady who was supposed to prepare it she said she didn't see that there was an order and I waited another 5minutes and was late for work. Today again I ordered,all the other people who ordered after me got their orders first and eventually when my order came the cappuccino wasn't prepared yet again. I don't know if it's personal coz the same thing can't happen to the same person at the same restaurant.