Unpleasant experience

My experience with auto & gen has been an unpleasant one, so I recently moved to a better and more secured area and called them to update my address , to my surprise the premium increased with more that R200. I asked the consultant why it was like that and all she could say was that I might think it is a secured area while its not, Okay I let that go. The following day I receive messages and calls from Netstar and they were calling to arrange a time for them to install a tracker in my car, this was shocking as I did not request for this and I told them that it must be a mistake because I have never made the request then the Netstar consultant told me it is Auto & Gen who told them to fit a tracker, I asked them if it was free and they indicated that it is billed in my insurance premium and this automatically means I will be having a three years contract with Netstar even if I leave Auto & Gen the contract between Netstar and myself will be valid. I informed them I did not know what they were talking about. I waited for a few days because I though Auto & Gen would call but they did not, so I decided to call and understand what was going on. They indicated that the request for a tracker was added by someone the day I changed my address but I did not ask for it and I asked for the phone recording since they like saying calls are recorded- it was a back and forth process that led to me cancelling my insurance because all they did was blame the next person but my question is , are they allowed to add anything to the insurance when we did not even ask for it? I was so disappointed and even though auto & gen was a bit expensive than other insurances I stuck by them but all this was just too much not forgetting the fact that they appear on my credit report too and they could not explain how it was possible.