Vodacom are *******

I am so fed up with trying to resolve matters with Vodacom. Since August I have been trying to close an account. Due to Vodacom errors they are now saying I can only close in January. ALL THEIR ERRORS! It seems like they are just trying to run out the clock now. This is tantamount to theft. After accepting advice from a Vodacom rep in store, and based on the Vodacom computer system, I upgraded a different account. Now they are saying their computer system should not have shown the incorrect date that it did. How, I ask, is one supposed to make informed decisions when you can't even count on information from Vodacom?