ITEM UNPAID NO FUNDS - FNB

FNB had charged me R799 of #ITEM UNPAID NO FUNDS on my account why would they try to debit my account 5 times in a short period of time and charge me a total of R799 for the times the debit order bounces I'm not happy with this as its daylight ******* 12 Feb . Item unpaid no funds 26/02 - R282 11 Feb Item unpaid no funds 26/02 -R141 10 Feb Item unpaid no funds 26/02 - R141 9 Feb Item unpaid no funds 26/02 - R47 6 Feb Item unpaid no funds 26/02 -R188 Total = R799 All this for 1 item. FNB this is not good. I am disappointed.