Double debit me without my permission

I took a loan with Standard Bank on the 17/11/2015. The team leader did not advise me that payment on that loan was the same month. I received a sms informing me that I am behind on my payment. I called the call center to make an arrangement to make payment. I very importantly informed the consultant that I spoke to on the 23/12/2015 that she can debit my account in one condition that there are no other debits for the same loan going through my account in the month. She advised me on a recorded line there will only be on debit done for December. The next debit will be end January. 31/12/2015 I get another debit order for the loan out off my account. So that two loan repayments of R 2008.00 in one Month. I called the complaints department the lady advised me that my funds will be refunded into my account on the 05/01/2016 on a recorded line. But when I followed up they advised me that it cannot be done.<br> <br> How can you just debit my personal account without permission? How can you have call center advisors that lie on a recorded line? I would really like to know this. I will forward my complaints to the NCR where you have to listen to the lies that was spoken relating to one DEBIT OR