Pathetic service from Matrix

I have been a loyal customer of Matrix for close on 2 years. I sold my current vehicle and needed a new device installed with my new vehicle. I phoned them to arrange the fitment. It took 3 phone calls before my call was answered. Thereafter I was transferred from customer care to the sales team, back to customer care back to the sales team back to the fitment people. No-one could provide me with the cost on my current unit or how to cancel or change it. They said they could only help me with the new unit. I then proceeded to discuss the new unit and who to contact at the dealer where it was located. I phoned them at 8am on Monday morning. By 4pm on Monday afternoon the dealer informed me he still had not been contacted by Matrix. I tried phoning them again the afternoon with no luck. My call was not answered. I sent them an email from my mobile app, no response. 8am on Tuesday morning I phoned them again and there was nothing on their system requesting my new installation. I then asked them again to order the installation and I was informed the sales team would get back to me. By 10am, I still had not received any feedback from Matrix, so I contacted cartrack and was assisted with a new account, and a device installation in 1 hour from start to finish. Absolutely pathetic service from Matrix. I am severely disappointed Matrix. I have also asked that my current unit be cancelled as I have sold my vehicle, and they informed me I should just keep my current unit, even though I no longer own the vehicle. So I can track someone else's vehicle's movement. I do not see how this is legal in any way. But I will discuss this further with my lawyer.