Very bad service with this garage

Caltex Garage in Hammarsdale KZN I always get bad service all the time when I'm filling my car at that service station, I parked my car for about 10 mins waiting for someone to attend me but no 1 did but they were attending all the taxis even the ones that came after me! So I decided to ask the guys why are they doing that and the other just shouted me get off the place if u not willing to wait coz we're busy here, so I'm not sure if it's bcoz the taxi drivers give them tips when they finished assisting them and I am not. So when they filled my car the guy decided not to close my tank properly and the petrol was full so m not sure if it was spilt out as I was driving... That place is not a recommendable to any one driving a private car and if u are not from that side its even worse but in order to be serviced there u need to drive a taxi from that area.