Charged on a cancelled policy with no refund

I cancelled my Discovery Insure policy & was assured that I wouldn't be charged for the following month. I called 3 times to confirm that I wouldn't be charged.<br> <br> However, at the end of the month I was still charged. I have now called 8 times to get a refund, but not one Discovery agent bothers to call back or follow up on the case despite promises to call back within 24hrs.<br> <br> Terrible service & ********* practices.<br>