Taking money from credit card

Via the online system of e-toll I first paid R255.40 to SANRAL (e-toll top-up) with my Cheque Card which FNB approved but SANRAL claims it did not received payment.<br> <br> Then I used my credit card and paid the R255.40 again. And again FNB says it paid them and SANRAL said there was a \Payment Failure".<br> <br> So I paid R510.80 to SANRAL which they claim they did not received."""