Poor service from Netstar tracking

I have been trying to get Netstar to remove and install a tracking device from one vehicle to another that we had just bought. Only about a week later after the dealership had installed a new device and paid 36 months in advance, now Netstar want to assist me. Little bit to late. Now I cannot access the device on my App because the dealership had installed the new device under my daughter in-laws name. Netstar consultants and staff now have a lot of lengthy stories and the even start to shout at me as n client which I think is totally unacceptable.