contract cancelation

for the last 24 hours i've been trying to call netstar cancelation / retention department to try to get them to cancel the contract and installation of the device in my car without any luck. instead am being transferred from one department to another. i want to let them know the car is going to be sold and the buyer doesn't want the tracking device. even after telling the technician i dont want the device he still calls me to arrange a fitment appointment. i want this matter resolved asap