Double billing again

I called the call centre informing that i have changed my Bank account from Capitec to FNB due to ***** activities that happened in my Capitec Account. I requested that they debit my account from my FNB account end of February but what happened is that they deducted from both FNB and Capitec account requesting in a double deduction. When I called the call centre yesterday I was told that the payment from Capitec is not showing on the system. How possible is that a payment was was taken on the 2nd March 2015 is not reflecting on the 11 March 2015. Iam really getting tired of these double deductions that are happening in my account because now my Old Mutual policy is not paid due to that you guys took double on my account. You are making my bank credit profile to look bad because now i have unpaid debit orders which is now an inconvenience for me. In December it was the same problem with a double deduction on my account.... Your Consultants are really unprofessional seriously.. I am really ****ed and angry with this company.. maybe i should just change my policy and take it some where were I will receive good customer service.