account debited 3 times and still no refund!!!

came to pep in middleburg mall on sunday.i swipped my card and it was declined 2 times.the third time it went through,but to my surprise few minutes later i get massages showing that myaaccount was debited 3 times.i then went back to the store immediately to report this and to get my refund.i explained the whole story to the manager and even showed her the sms and the slip.the manager refused to assist and told me that it will berrefunded in 24 hours and i then advised that i dont stay in middleburg im from joburg and i had to use that money for petrol but the stupid clueless manager didn't know what to do.i was then told that a she will log a call with the finance department in the morning and money will be back..i spoke to the useless regional manager melenie who wasn't much of assistance and she was very rude.i want my money back in my account.its been days and im still waiting for the money.im so angry and right now shpuld i have to go back to middleburg prp will need to refund me for my petrol.i need this to be sorted as in asap..i regret coming to that stupid store..