Bad Experience with FNB Atm's

I received a R100 from FNB through a cellphone banking from a banking,as i was desperate for cash that time.I then went to an atm in Boulevard to withdraw,i got a receipt from an atm ton say they are sorry they could not help,that transaction was not successful.I thought they were gonna return the cash,even though it showed that i withdraw the cash i kept on checking my balance.This is the second incident that happens with FNB,at first i lost about R6000 on the atm i am really so angry,with the service from FNB.