Poor service from car track

I called car track to remove the tracker from a vehicle that i sold on the thursday the 20th of feb, i gave them all the information for the deactivation of my vehicle that i sold, i advised them that my new vehicle will be delivered between friday and monday, my new vehicle was delivered on friday so i called them on friday to arrange the installation on my new vehicle, all the while i was told that my installation on my new vehicle will be done today tuesday the 25th, i even received the confirmation and confirmed my address for the installation, today at 10am as per the confirmation no technician was out to me so i called the call centre i was told that the technician was running late and he will call me for the installation, at 1pm still no call so i called car track only to be told that my installation was cancelled no phone call or sms notifying me of this cancelation, now they tell me that i was not even scheduled for installation today, after around 4 calls to car track i get the resolution that they will remove the tracker from my old vehicle next week friday and do my installation on saturday the 8th, car track say they will never leave us on the lurch as their mission statement but thats a lie, they left me on the lurch now with their lies and poor service, this is very unprofessional, i asked to speak to a manager and the call was cut, very unhappy with the service ive received for this swap, id appreciate if a manager would give me a call asap!!!