CANCELLATION ON TELKOM INTERNET CONNCECTION - NO JOY

I have been trying to cancel our business "non working internet connection" for more than 6 months now - yet i am still being billed? I have gone into the telkom stores; i have emailed numerous times...... finally getting a response on the 8 Feb.... saying she will excalate my cancellation - but NOTHING..... Feeling highly frustrated now.....