INCORRECT DOUBLE DEBIT

On 24th January 2015, I bought an item from Truworths at Cresta with my Standard Bank Debit card for the amount of R175.00. The next day, I returned the item to Truworths and was given a credit refund for R175.00 on my Standard Bank Debit card. From the 26th to the 29th January, my bank account was debited and credited THREE times for this amount, which in effect meant that I did in fact receive the refund from Truworths. HOWEVER, ON THE 24TH FEBRUARY, 2015, STANDARD BANK DOUBLED DEBITED ME WITH THIS AMOUNT, WHICH MEANS THAT STANDARD BANK NOW OWES ME R350.00! After hours explaining this to the Standard Bank Call Centre, I eventually received two reference numbers for this problem: *** & ***, the latter apparently RESOLVED??? And with a promise from Standard Bank that they would give me feedback about this - ABSOLUTELY NO FEEDBACK AND NO DOUBLE CREDITS HAVE HAPPENED!!!