Manager with bad customer service

Sasol booth road west - The manager / team leader at this garage prioritized a truck that came to fill up over me in a light passenger vehicle. He told the petrol attended not to allow me to fill my car, go inside the store to purchase & and pay for the fuel and my items there. He then proceeded to follow me inside the store, infront of other customers to tell me to go pay at the filling point for the fuel & go back to the store to pay for me goods, just to accommodate the truck driver who found me at the filing station. Clear the garage prioritizes truck over the small change that is brought by me to fill my car