i cancelled my insurance, no answer!!

I cancelled my insurance and got confirmation thereof on the 11/05/2015. then, came month end in June, it was still deducted. I have been trying to get through to MTN since the 29/06/2015 and today is the 02/07/2015 and still no answer!!<br> <br> how pathetic is the service at MTN!!! I cant wait to finish my contract and move to another provider.. this is just frustrating when they keep you hanging on the line for more than 10 minutes till you eventually give up.<br> <br> someone, anyone please please help me!!!