bad service!

I have been querying my tracking account from November 2015 already and have been sent from pillar to post since then. I have had Patience/Precious assure me that she will revert back to me with positive feedback and to date I am still waiting for her to get back to me. I have since been dealing with Lesego Mokone who called me last week extending her apologies from \management\" because this issue has dragged on for too long. She then advised me that I will only have to make a payment of R397.00 and that my tracking device will be replaced at NO COST at all. She has since advised that she would send me a confirmation email to everything she had said to me and assured me that I will no longer be getting communication regarding an account that is in arrears, yet I received an email today and whenever I call Lesego is never at work. The appalling part of this whole predicament is the fact that I am receiving statements for a tracking device that is not even in my car as yet. I don't think I have ever experienced such bad service from any service provider prior to this."