unfair treatment

<p>On the 25 of may 2016 i tried to withdraw 3000 from a fnb atm @ china multiplex in crownmines the atm took my card and then recived a massage saying i withdraw but i never received the money or a slip. I then rushed to my nearest branch witch was Industria they escalated my problem an notified me that they need to do an investigation for 14 days an then get me feedback i waited cause i had no choice after 6 working days they called to say that they are done with the investigation an will refund my 3000 within 24 hours witch they did.On the 18 July 2016 i received a email as follow.We refer to your recent enquiry regarding a dispute transaction on 01/06/2016 saying they received evidence from the atm aquiring institution that the funds were dispensed succesfully and the atm balanced.My question is what did they do in that 14 days when they said they will investigate and why did they pay back the money in the first place im very confused and need answers cause the managers at the branches that i called can not answer me im sitting wth a negative 3000 on my account rite now and I CAN NOT AFFORD TO LOOSE THIS MONEY AND DONT NO THE REASON BEHIND ALL THIS.</p>