Steering Wheel Vibrate problems of the 2008 Hyundai Santa Fe

The contact owns a 2008 Hyundai Santa Fe. While driving between 60-65 mph on normal road conditions, the vehicle vibrated excessively when accelerating and decelerating. In addition, the steering wheel began to vibrate. There were no warning indicators illuminated on the instrument panel. The vehicle was taken to an authorized dealer for inspection and they performed a four wheel balancing on the vehicle three separate times. The vehicle was taken to an authorized dealer on two more occasions for the identical failure, but there were no resolutions. The vehicle has not been repaired. The VIN was not accepted by the system. The failure mileage was 100 and current mileage was 2,000.