Downgrade!!!

Had tracker monitoring devices installed on 2 vehicles more than 3 years ago and I could monitor both vehicles on the app. I replaced one vehicle and when the new device was installed they removed both my vehicles from the tracking app saying this device is not supposed to be on the app. Why for more than 3 years I could check on my cars using the app? They downgraded me with no notification. Emails get responded to 4 to 5 days later whether prioritised or escalated. This company is dreadfull, they sent an email to enquire about one device not working after 2 months!!!