R25 over charged for fuel !!!!!

Dear Engen, I would never put petrol in at Centurion CBD Engen (Engen Centurion motor park).

I asked for R500 93. The attendant opened my petrol cap, took 95 and asked is this the right one ? Then I said no and asked for 93. So he puts R475 in, and I get charged R500. I go into the station, asked why was only R475 put in. The attendant said he put R25 95 in. And I didnt saw it. How nice. The best part, the staff inside started to argue with me. I wont ever use that fuel station again. I have a pic of the R475 and R500 charged ! Its ********* to do business like this to be honest !