Debiting 3 months in a row even after canceling the policy

I have canceled my policy in June with them they even promised to stop my account yet for 2 months in a row they still debiting from my pay slip. I called in several times and eventually got refunded only to find that when I look at my August pay slip they deducting yet again. This company's service makes me sick not to mention the amount of airtime I used trying to fix this matter. I was even told that the matter will be dealt with and I will be called back and to date I still have not received a call and still losing my money what kind of bad service is this I would never recommend their service