Charged 5 times for one meal and now given excuses

On the 23.08.2015 I bought food from McDonalds and used my bank card to pay the delivery person struggled with his machine to get transaction successfully, meanwhile was being deducted from my account, I called the store later and I was informed that the money will be reversed to my account in the next 24 hours, 24 hours turned to weeks until I called the store again and I was asked to email statement from the bank to verify the transactions, I send the statements, Charles the store manager didn't bother to give me feedback I had to be the one calling all the time to ask them how far are they, later on in September after calling and calling this Charles I received email from one Betty Kekana requesting me to email them my card details to continue their investigation, a day later she told me that their bank is not picking up the debit from my card details that I provided them with, and she referred me back to my bank, I told her that I have provided the store with my bank statement already and never hear anything again from both Betty and Charles, please McDonald's owes me R519.20 I cant pay 5 times for just one ,meal, I want my money back not this runaround they giving me