Excessive Charging of Diesel by Engen Higginson Convieniece Centre

Whilst I understand that the diesel price is uncontrolled it is totally unacceptable being charged prices well in excess of the guide prices. I filled up with 50ppm diesel on 21st November 2018 at the Engen Higginson Convienience Centre and paid R17.47 per litre against the coastal price of R15.63. This is R1.84 above the guide price. I will never fill up at this fuel station again and would encourage others not to support this fuel station.