Worst Customer service and company to deal with. Vodacom owes me money

I am still waiting for a resolution after 3 months. Vodacom has been billing me incorrectly after a ********** upgrade and activation was done. No one calls back to provide feedback unless I call or email. Vodacom owes me money due to incorrect billing but I still get debited incorrectly. Vodacom is the worst company to deal with and their customer service is not helpfull. Never take a contract with Vodacom. If this is not resolved today than I will take this matter up leagally and will have to reverse the last 3 months debit orders.