Upgrade without my consent

This is now rediculus, this is now my third complaint with regards to ***** on my account. They have verified it is ***** and given me a credit for one months invoice, then deducted again this month and the contract is still on my account every month. I have email and requested a follow up on 22 of January again and till today all I got was I will follow up.<br> <br> What is going on???? Can they not fix this. All I want is them to fix it and cancel my contracts. I want nothing from Vodacom on my name. These contracts have expired a year ago, but you cant cancel if there is a ********** upgrade on my account????