The worst service provider ever!!!

This is the 2nd time im writing a review with vodacom. So, last month i found that some guy from Eltel moved me from a top up to an open contract without me knowing, which resulted me owing vodacom a lot of money. After back an forth between vodacom, they admitted that the guy was wrong and that they'll move me back to Top up, and they then credited my account. Today im sitting with the same problem, and to my surprise, i was never migrated to Top up, im still in an open contract, even though i did call on the 8th of Feb when i received my statement, to query this. Its been 3 weeks and nothing has been done. I dont think vodacom understands the frustration that we as customers go through especially when we're not being taken seriously. I actually want nothing to do with vodacom. Once this has been resolved, im cancelling my contract. Ive been with vodacom for over 10 years now, but its time for me to go companies that know what customer service is.