Debiting My Account Twice

On the 15th of April 2016 your system debited my account twice. I called my branch as the 15th was on a Friday was told to call the call centre only on Monday. I tried calling and was being cut off before completing the calls and starting the verification processes each time. I spent an hour Tuesday 19 April 2016 and finally finished it but only to be told will get the my money back in 7 working days. There is no reference number just a promise from one Tembi. Very Annoyed by this.. ...