Vodacom Accounting is abysmal

This review concerns the specific department that is supposed to handle accounting matters. 1. It took this particular department 3 months and over 20 SMSs to finally update my credit card expiry date (following the usual regular credit card renewal process). During the final month my service was suspended. 2. 3 weeks ago, I downgraded my service and received the following SMS: "You will receive an SMS and Email with your exact cancellation or conversion date. Until such time, your Vodacom Contract Cancellation is not confirmed." I have received nothing further. I wonder how long it will take my request to be confirmed????