Vodacom why?

Good day. Very upset with vodacom. I am trying to contact them for a while now and everytime i get onto the website i get this idiot robot to converse with. Then he claims im not a vodacom account holder. I need to find out why Vodacom charged me R200 more on my bill this month and not inform me. Secondly i never app**** for a data package of 5gig. What the freak is happening here. Wow. Vodacom be sure when my contract ends. There will be no more vodacom in our household.