Lack of accountability and incompetence

Vodacom made a massive error with my contract transfer and every time I call or go to their shops the one consultant blames the other one for not understanding. There is no accountability and I am now paying amounts I shouldn't have for nothing.

How is it possible to have to call them every single time they log something as resolved, to only find out it is not resolved. It is the incompetence and lack of accountability that infuriates me.