CASH DEPOSIT DISPUTE!!

I DID A CASH DEPOSIT OF R12600 ON THE 03/12/2015 AT THE SMITH STREET FNB ATM, THE ATM TOOK THE MONEY AFTER WHICH THE ATM JAMMED AND A RECEIPT INDICATING UNSUCCESSFUL CASH DEPOSIT WAS PRINTED BY THE ATM. I THEREAFTER WENT INTO THE BRANCH TO NOTIFY THEM OF THIS AFTER WHICH A CASH COUNT WAS DONE AND ONLY AN AMOUNT OF R10300.00 WAS COUNTED, NOBODY CAN TELL US WHAT HAPPENED TO THE REMAINING R2300!! IS THIS THE KIND OF SERVICE FNB OFFERS TO CLIENTS?? JAMS MACHINES THEN ***** CLIENTS MONIES??? THIS IS A BUSINESS TRANSACTION WHICH ISNT OF MY FAULT AND DUE TO THE PROBLEM OF THE BANK I NOW HAVE TO BE SET BACK AND FORK OUT THE BALANCE OF R2300! IF THE TRANSACTION WAS UNSUCCESSFUL WHY WASNT THE FULL AMOUNT RETURNED TO ME WHERE DID THE R2300 DISSAPPEAR TO??