POOR SERVICE

I have been calling and e-mailing Debra for numerous times and she hardly responds and if I call her she never answers her work landline and at times she even drops the phone. I then called the Nedbank head office and the gave a number for her manager I also tried to call him but with no luck as he also does not answer his work landline I have emailed him with no luck. I don't see the reason why I must be treated like this and why my rights as consumer must be violated when my account is update. I am truly disappointed at the level of poor service that I have been receiving for Debra and her manager.