Wrongful billed and NO refund

Last year April 2014 i was called by FNB and offered an overdraft on my company account. I agreed and had all the required documents signed and an FNB courier collected them. To my knowledge the application was concluded and overdraft in place. 2 months later i go into overdraft on my account and to my detriment FNB did not activate the facility therefore charging each debit order into overdraft over R100. They charged me almost R1000 and claimed they lost the documents and would follow up. I was promised by Shaun Maistry That we need to REDO all the documents and then my branch manager would be in contact to arrange a refund on the wrongfully charged fees. Still to this day nothing has been done about it and i am LIVID that FNB can treat their customers like this and ***** from them with no consequence.