How can this person be a manager?

On sunday night i phoned vodacom after finding out that my 3G does not work anymore. The consultant that initially assisted me had really bad attitude making it as hard as possible to a paying customer to get decent service. I then requested to speak to her manager. The manager was even worse. I have never came across a manager with such bad listening skills. I had to repeat myself on every sentence. Unfortunately the manager refused to assist me in my request. I now need vodacom to immediately cancel my 3G contact as I am paying for it yet does not get any 3G data. Vocacom also does not want to tell me why I am not getting any 3G data anymore. This contract is not only expiring on 10 October 2016. That is unfair