Withdrawal Declined with no reversal

I made a withdrawal then it was declined by bank, when I made a follow-up I were told the money was sent to Capitec while my banking details is African Bank. I were told the money will be returned within 24 hours but still nothing has been done. I am so frustrated about the way you are handling customers and you always don't take queries too serious. Security issues is one of my concern because you can't send money to incorrect bank while you have the correct banking details stored in your side. Different feedback is what I recieved for different Supervisors.