False advertising

Please remover your device from my car and cancel my contract as you are in breach! Number 1 sending an sms to my phone when the so called panic button is pressed means nothing, what is I was being hi-jacked??? Number two, according to advertising, the R180 device in my car protects against signal jamming, my brother just proved to me that it does not, so please come and remove this ******* so called all round tracking and safety device from my car and cancel without penalties as you are in breach!