Pathetic. Double debit. No feedback

Almost monthly monies between R400 and R1000 is debited from my account twice after a purchase. The first time I laid a complaint telephonically and the matter was fixed only a week later. My complaint of last month, telephonically and personally, has yet to be resolved despite receiving an sms saying it must be resolved by 23 MARCH!!! I now have to check my statements daily out of pure paranoia and it seems there is a duplicate again this month! I am fed up and moving to another bank, but I would like my monies back please!