Failure to resolve ***** case promptly!!!!

I'm quite disappointed with Standard Bank and their ***** team, on the 29th of July I received an MMI to approve or decline a transaction that was about to go off my account, knowing that it wasn't me as I don't have an Amazon account ,I immediately declined the transaction, needless to say it still went off my account and this happened while my cheque account was switched off, in the past 3 years I've been reported 4 cases and to see that this still happens even with security measures put in place is quite disheartening. It's been over 7 working days since I've reported it and all I'm getting is generic messages saying they're waiting for the transaction to be cleared which happened on the 2nd of August, to say this is pathetic is an understatement. Can Standard Bank take their clients seriously and resolve their security issues , because how do I decline a transaction and it still goes off my account. Case :***, at this point I don't feel my money is safe with this bank at all and I'll be making decisions to keep my money safe elsewhere.