Vodacom Lies and Expects You to Clean up the Mess

I originally signed up for a SIM only contract that meant I got double minutes and data on my contract. I was happy with this and moved onto a month-to-month solution on that contract. I was then phoned by one of your "online" department people and said I can keep my contract and just pay less every month. I was told by your tele-sales person that when I upgrade my contract, I would receive exactly the same benefits I did before. Then I get an update this month, saying that I am on my new contract and now I have half of everything. I phoned your upgrades department (5 April), who said they would launch an investigation. I phoned in again today (early morning 16 April) to find that nothing has happened so far. I finally pushed the person on the other end and was told I should speak to the online department. The lady there said that they would start and I would be called back in the afternoon. I am still waiting. I am routinely **** to about being called back, and I have also been kept hanging by the wrong department for almost 2 weeks. Exactly why should I keep using your service if all I get are lies and poor customer service?