Dissatisfied with Upgrade department- Upgrade department to Upgrade your Work

Been a Vodacom customer for years and I am REALLY appalled by their service . I have called numerous times requesting that my contract NOT be renewed and I would use the number as pre paid , as my account is in errors . Vodacom decides WITHOUT my permission to upgrade my contract .. I did not get a new device or receive airtime or data but I am paying for this contract!!! I called to query and was told the department concerned was having system issues , eventually an agent called me back but then couldnt log into my profile and I was told she would get back to me , its almost a week and no one has called . Vodacom up your game!!! Your consultants should keep their promise to call back and not waste customer's time