Insurance options not being cancelled, still being charged

I went into the store and signed a physical document and marking the insurance options I want to be cancelled. I got an sms a day later saying it will be cancelled within 30 days. I am now going for a 2nd month of the service not being cancelled and I have sent in two emails and the only response I'm getting is the issue is being forwarded to the accounts department. Days have passed with no reply and yet I am being charged this month for a service I requested to be cancelled last month. I want my insurance options cancelled and the charges be removed from my account. I WILL NOT pay for something I requested to be cancelled more than a month ago.. Just pathetic.