Bad Service from BP Garage Brakpan Denne Road

Yesterday at 15:22 I put petrol in my car at BP in Brakpan for R100, they did not put petrol my kilometers were 80, I went to a friend when I got there it was 75 kilometers, later I went back and they told me there were no managers to help me, this is not the first time they are doing it, please don't put petrol at BP garage, same thing happened in Selcourt, Springs, there's something they do not to put petrol, they give you a slip but do not put petrol not at all especially if you paying using cash.