Double debit

On the 29th February my two FNB devices debit orders went off as per agreement (last day of every month). I was then surprised when I received a sms notification on the 1st March showing that the same amounts that were paid on the 29th have been debited again. Last week I went to the FNB branch in Willowvale to rectify this error, the lady there said she only sees that the devices have been paid once on her screen. Because I was certain that they had been paid twice I further called the FNB customer service helpline and the lady confirmed that indeed the items had been paid twice she then said because it is FNB devices she will transfer me to the section so that they fix the error. The lady from device section also confirmed that they (FNB DEVICE SECTION) are aware that they have double billed me but unfortunately they can not fix the error. She gave me an option of not being billed in April if I change my debit order date. I told her that I am comfortable with my debit order date and will not be changing it I do however want my money back for this month as this is messing me current budget.