Bad customer service

Im getting annoyed with cartrack. I bought a new car, requested to move the tracking device from the old car to a new car, The consultant gave me incorrect information, he did not check how long I was with cartrack and told me about a plus minus R870 fee which I was more than willing to pay, He then saw an opportunity for a new sale and sold me a new device so that the old one must be cancelled,On the new tracking device I was not able to monitor the car on my phone and it had to be escalated. now cartrack is charging me for two tracking devices of which the old one has now been disconnected and you are telling me about a notice period for what as my initial request was to transfer the old tracking device to the new car.Im not paying for your mistakes. fix this.