Paid for nothing

Bp Oreilly Merry, Benoni. A week back I filled my car with 250 Rands and did notice that my km to empty stayed at 320km. This never happend before. Today on 18 Dec 2017, I stopped in a hurry, my car stating 10km and asked for 100 Rands. I saw the attendant clearing the machine and actually inserting the pipe into the car. Once again I noticed that it stayed at 10km after I paid. Swithed my car off and on again a couple of times and nothing changed. Went to the office and a receipt could be given for my transaction, which means it was paid for but not received. Camera footage isn't necessary because I saw the attendant doing his job. I won't return, after years of going there. Something went wrong and I'm the one losing money.