95 poured instead of 93

on the 15/02/2016, I arrived at BP in Lambton at 6:45 and I had to wait for a good 10 minutes to be assisted. a gentleman can strolling towards my car and I asked him for R150.00 93 and I repeated it twice and to my surprise when I was paying and I realised that the nr of litres did not correspond with the money paid, I realised that he poured 95 instead of 93 and when I told him, he didn't seem bothered. the service I received on that day was horrible!