Pathetic customer care

Trying to find out why Vodacom increase contact installments firstly 7.1% 4 months ago without any explanation and now again explaining increases thst do not make sense at all, the first operator unable to assist and when i ask for a specific person i were told they can not transfer calls to the said person but please hold , ten minutes holding decide to send email and response is email no longer in use talk to the robot. Pathetic customer care