faulty instalation

25 June 2018 cartrack sent someone to do an installation on my daughters vehicle. Somewhere he has done something wrong as the electrics of the vehicle are no longer working as they did.The is was a new vehicle. My daughter and has been contacting cartrack daily and cartrack has not responded to even make an effort to contact her and sort out the problem. I am going to advise the Head office of Nissan that this is the service of this company so that they may be aware that when the vehicle has to be repaired it is not as a result of anything my daughter did but a very poor service from an "esteemed" company and that cartrack will bear the costs not us