Terrible customer care

I traded in my vehicle that has a netstar unit on it. The dealership got another netstar unit installed in the new vehicle. I have emailed and tried to call netstar to cancel the unit on the vehicle traded in. There has been no response to my emails sent to customer care or cancellations except for the automated email. I tried calling on a few occasions and held on for more than 10 minutes and my call was cut off. This is really terrible customer care. I even messaged on messenger service via Facebook and the netstar page. I keep getting the same generic response that someone will contact me. Still no response. I have been a netstar client for 23 years but looks like it's time to move elsewhere