Electric Power Assist Steering System problems of the 2003 Land Rover Range Rover

My 2003 Land Rover Range Rover hse had a failure of the front differential spilnes, axle shaft, differential unit and drive shaft which caused total loss of vehicle propulsion at 60 miles per hour on a busy highway during rush hour traffic. The vehicle had to be towed to Land Rover north scottsdale where it still sits because neither the extended warranty company nor the Land Rover dealership will claim responsibility for the repairs which are in excess of $4,000. I also had a failure of the retractable steering wheel which resulted in a diagnosis of having to replace the entire steering column.