Vodacom Insurance Division - TERRIBLE service!

I've made several attempts now to cancel my handset insurance with them. Apparently the only way to do this, is via the insurance division call center. I did exactly this. After several (very long) attempts, I finally managed to get through to an agent on Friday 4 June. He assured me that my insurance had been cancelled on his side and that I will not be billed for such for the month of June. I did receive an sms from Vodacom confirming the cancellation. On Saturday 12 June I received an sms from Vodacom telling me to ignore the cancellation sms which was sent out in error and that my insurance remains active. Also the insurance amount is reflecting as active on my June bill. Today I have spent hours on the phone (AGAIN!) trying to reach the insurance division call centre, with no answer. Can someone (ANYONE?!) just please cancel my insurance which I havent needed for the past year!? I cant imagine that this cancellation has to be this complicated to achieve. PLEASE help!