Unprofessional petrol attentand

The service here sucks I went there to put petrol n asked if they take a petrol card he said yes it was a split payment next thing he said I should have explained I'm using a fleet card.. Like he doesn't even know wht is a petrol card next thing he insulted me said I'm a fool"uyislima wena gogo repeatedly" who says this to a client.. The manager also called n said they not suspending him clearly they are covering up for him. The service is very bad if u planning to put petrol don't ever think of going there