Engen Garage Merriespruit Freestate

This morning I went to the Engen garage here in Merriespruit in Virginia in the Freestate, I usually do not use this garage, because there are always a problem with this garage if I want to put petrol or diesel in my vehicle. I stopped at one of the pumps that are working, because not all of them are working. The guy that is working there come and stand by my car not saying anything, after a while I say "hello" he just in a very sarcastic way say "ja" I asked for him to put petrol in my car, then he and the other woman that works there stands and makes jokes and he sarcastically asked that I tell him in English what the amount is that he has to put in my car. While the petrol was still flowing into my car he takes the nosel out and waste the petrol on my car and on the ground and put the nosel back in its place, he did not put the full amount that I asked for. Closed my car and grabbed the money from my hand and again said to me "ja". This is not the first time something like this happened at this garage, there are always an issue when you go to that garage, and I am not the only one that has bad experiences at this garege.