Misleading information to client

Recived a call from one of netstars branches the consultant telephonically im with tracker sa but they made it seem like they tracker and i was under the impression that i am thier client and they made me hold on the call they looking into my account and see when my cobtract ends the way the consltant spoke it made it seem like im a client. They schedule and appointmet to change the tracking device as they say ecery three years it must be upgraded. Their techician comes out he was busy with one vehicle said his done with changing the device. i was so caught off guard im realising the tracker techician when he came didnt allow me near the vehicle when he started , byt the netstar technician worked so casyallly.i allowed the technician to complete what he had to do then iu was told ti speak to one of their consultants whose mentioning a cancellation but my tracker devices were not changed according to the techician he said he cant temper witg another cimpnies device so this incident seens very unnerving as a consumer in this day and age of ******** activities i have responded to netstar through and email to cancel their service as i received an email say their device is active in the interim i have spoken to tracker to check my device with them are working and everything seemed this seems like a money making scheme as consumer get bound to contracts and have to pay for the balance od the contract has to be paid when cancelled im writing so bo one else get caught in this and is forced to pay for something they dont want. I sont wish to speak to any of their consultants as they way they ha dled the matter very unprofessional but professional in a ******** and undermining way.