Last month my cars unit was replaced because it could not be picked up

Last month my cars unit was replaced because it could not be picked up. A week ago the unit started sending false messages of “ignition on” “ignition off”-about over a hundred, while the car was stationary in my garage! I logged a call about this, they called me and said they will send some settings and that I must drive the car. I did that but I heard nothing since from them-totally *********** poor service !!