Bad Customer Service

I cancelled my insurance on my contract in Sep-15, but Vodacom and Cellsure has still been deducting insurance monies up to now. I've been complaining about these deductions in Oct, Nov and Dec-15 again, but this has still not been fixed. I spoke again today to K****tso in the accounts dept and again she couldn't fix this. Asked for her manager's number but she didn't want to give his number. This has just been going back and forth for a while now and I'm fed-up. Cellsure (your insurance partner) is evens worst. Here are some of the names that I spoke to