Unauthorized Debit Order Midmonth

Can someone there at FNB tell me why this debit \FNB PERSLN***99 150814"was made from my account today (14/08/2015)?<br> <br> Do I really have to keep lodging a complaint every month through Hellopeter.com for same issues?<br> Do I really have to consider moving my account to another bank just to avoid this headache?<br> <br> I really hate this ! Can someone reverse that amount without being told stories whatsoever coz this is nothing but nonsense."""