Cannot cancel contract / debit order.

I sent my first cancellation of contract email (this is after the initial 2-year contract) on 19 of June 2014......To date, Autopage is still taking money off my account and there is no way I can stop this from happening - I have sent numerous emails and countless telephone calls to various \customer service"people. I have tried to speak to a Supervisor or manager after my 3rd attempt"