Worst service at BP CT Airport

So disappointed at tge service I received fron the BP at the Cape Town International Airport. I had to wait for long before I could get service, what makes it worst is that some of the guys rather just go help the bigger fancy cars even though they arrived after us. Instead of service on a 1st come 1st served basis.... Does the fact that I was driving an average car mean I should be inferior when I should be getting service from your petrol stations?