PLEASE CLOSE THIS CONTRACT

I have been struggling with closing my cell phone contract for the past 2 months. My contract was supposed to have ended month end of October. I did what was required from me which was to submit the cancellation form and that was done way before time in September. I am loosing my patience now cause they still deducting money, and even worse my monthly deductions have increased. The call centre is not much of help as I was told that there's someone handling my case and they would call me back. I AM STILL WAITING???