INCOMPETANCE TO THE MAX

I wish I could rate with no star. I have been trying for 20 months now for them to change my account from personal to business. I get non stop run around from them. Customer care refers me back to the store where i did the change, the store refers me back to customer care. I would appear that the systems and or staff at Vodacom are incapable of doing this transaction. What must one do to complete a simple task - Customer Care DOESN'T CARE - they speak to you as though it is your fault and you don't know what you are doing. Frustrated to the max