ADT does not want to CANCEL my membership

Where do i start, we have been trying to cancel our membership now for the last 3 months, in polokwne, with no help at all. I spoke to Petrus van Wyngaardt [Fidelity-ADT] (Sales Administrator ) who promised us that he will send a request to cancel, till to date nothing has been done. He keeps promising us a bunch of empty promises.

Dont even get me started on the useless head office in Johannesburg, telling me that they cannot help me as we are based in polokwane, what nonesense , what kind of head office is that? that can not solve regional complaints.