Poor customer service using call centre

I have been phoning the Vodacom call centre since Monday 1 November to process upgrades for my various numbers on contract. I have been pushed from pillar to post between departments, I have been promised that I will be phoned back and no-one ever phones me back, and most recently I have contacted the call centre only to get an automated response to indicate that my number has now been blocked due to a high number of calls from my number and that if I want to query it, I need to phone a different number that will now cost me R2 a minute...?

I am trying to upgrade my contract AND pay Vodacom a higher monthly instalment (~50%) than I am currently paying and this is how I am being treated? Where is the customer service? Clearly Vodacom does not want my business.