Terrible service from FNB

i have been trying to close my account with FNB because of this unauthorized debit orders but it is story after story as to why i cannot closed it .someone who was *********** forgot to do their job and i was told by the team leader at fnb smart devices that it is my fault i did not say anything As if i know how their system work FNB used to be the best but now its the worst bank to bank with