****med by Vodacom and Mondo

I was contacted by Mondo regarding my "upgrade" with vodacom which turned out to be a complete misrepresentation of costs as well as data and talk time I would receive with vodacom. I have subsequently spent most of my airtime trying to get it cancelled so I can finally leave vodacom but nothing has been done to resolve the issue. I managed to get to speak to someone once and my 3 mails have been unanswered. Vodacom itself cannot help me as I dealt with Mondo which is ridiculous as Vodacom is ultimately responsible for their products. I am at a loss as to where I can assistance. My next step will have to be the ombudsman.