Rude staff member Khanyo at Sasol Newcastle Harding Street

I went to Sasol garage Harding street Newcastle to fill petrol. Apparently the lady that assisted me doesn't know how to pump tyres which I understand. The one she asked to assist refused. Khanyo said she won't waste her time with tyres while there are lot of cars waiting. I'm not too sure if at sasol they only fill petrol and don't assist with tyres. Khanyo was sure rude.