Pathetic service from branches and call centre

I have been trying unsuccessfully to resolve an internet banking issue since 18 Nov 2015. I am unable to place notice on my investment account. I keep getting an internet banking error. Nobody cares enough about the matter to assist. I have spoken to a list of ineffective people on numerous occasions. From Balfour Park, to Eastgate, to the call centre. Everyone hides behind 'the email they sent' with no follow up. Why can't I get to speak to a person of authority to resolve? Are they too high up to bother with the small business owners?<br> So disappointed and frustrated at the pathetic feedback and lack of response. Please don't get ANOTHER pathetic call centre agent to contact me in the effort to placate me without them actually having the know-how or ability to assist. This is a private bank and a service I am paying for (Nedbank has the highest service fees) - behaving and treating your customer like a government institution.