Transmission Stuck In Gear problems of the 2008 Kia Motor Optima

My husband went to walmart to drop off a movie. When he came out he saw one of the employees holding the car from behind because it was rolling back. My husband put the car in park and turned it off and the car still rolled back. When he got in the car and turned it on the head board showed it was on �n�. No check engin light or any other warning light was on. The shift gear was stuck on n. And if manual brake is not on then the car will roll back. You can move the gear stick in car to park or drive but the actual car is stuck on n. Shift gear will not change from n. If it had not been for the walmart employee stopping our car than it could have been alot worse by crashing into other cars behind it or even running over somebody causing a fatality!!! called kia company to report it but they denied it being related to the recall that shows online on kia Optimas 2006-2008. They told me only specific Optimas have that recall. We haven't ever had any issues with our car since we bought it new in 2008. We have always maintained it and taken good care of it. This is a first for our car and this incident we had with our car is the same description as the recall. We feel that kia should cover this cost due to it being a manufactuer error. The recall states � incorrectly installed cables have the potential to come loose from the transmission, disabling the shifter. If the cable comes loose, a car in park wouldn't shift into any gear while a vehicle already in gear wouldn't shift to reverse, neutral or park. If a car was parked and accidentally left in gear, and if the parking brake was not applied, the car could potentially roll away and cause an accident or injury. � kia should be held responsible and take care of the problem and stop saying only specific vehicles have the recall. Well my car did!! its a 2008 kia Optima and had the same incident happen thats on recall. Help!!.