Caltex 1 Stop The Ranch exploits tourist in need!

I stopped at Caltex 1-Stop The Ranch, Polokwane to get some help with a puncture. I am a tourist and the pump attendant said they could repair the puncture by putting a plug in the hole. They repaired it and then charged me R200 to do this! What is worse is that they gave me a receipt from the card machine that did not even say I had a puncture repair - it said I put in fuel for R200. What a *******! They have exploited me as a person seeking help. I know that it does not cost R200 to plug a puncture. At most it is between R70 - R100. This kind of behavior will cause you reputational damage. I would rather run out of fuel than stop at that place.