FNB Marketing Harassment

FNB has officially moved to the "harassment" point in their marketing. I am an FNB client who has opted out NUMEROUS times from all of their marketing divisions. They keep phoning me month after month. This is against the law. I have spoken to managers who have insured me that I am opted out from all marketing in the group - only to be phoned again! I just spoke to another manager after receiving another marketing call from *** who told me "to go to the branch to opt out". Why on earth must I go to a branch to opt when you are phoning me from a call centre PLUS I have already opted out countless times in the last three years! It is unacceptable!