Terrible customer care service

Phoning customer care never helps as no one can ever help you with the problem you have. I have been waiting a week now for the upgrades department to phone me so I can cancel my upgrade, and when I ask to be put through to them they refuse to take my call. Even though the week before they phoned me 10 times a day to try and convince me to upgrade. They don't care at all about helping their customers. I have switched to MTN and I can't wait to cancel my contract at vodacom.