Aggressive owner/manager with the worst client service

I poured R100 petrol with 1 bar in my car and when I drove off the car just went empty. I spoke to the attendant which called the manage who in turn called the big manager. I explained my problem if they can check if there is no problem maybe with the pump, he blamed my car. I told myself i will pour another R100 but I'm not happy. He told me I'm irritating him because i think they ****** me, he threw the R100 at my face upon the arrival of my partner and he refused that I take it. I ended up going to another garage and poured petrol and my gauge moved as expected. The worst service for a boss to throw the money in your face and tell you that you are irritating him