****** at Shell garage !! No petrol but I paid !

I went to the Hassan’s Colorado Service Station with just 14km petrol , I just put on petrol for R100. Handed cash to the service guy and didn’t take receipt as I pull away I noticed my petrol remain 14km, so quickly went back to the guy, immediately I gave a receipt and said all was fine. I asked to talk to manager and asked them to take photo of my screen that shows 14km still. Manager refused and said petrol is expensive and there’s nothing he can do and non of his customers never complained and his guys will never ****** me.

Now just got home I’m at 11km and home is just 2 Kmart away from the garage. For the first time I feel ****** .