I have a 2002 Buick Century. I can put the keys in the ignition, but cannot turn the key. The steering wheel is locked, but I and others have moved it side to side over and over with no success in unlocking it. As I said, the key will not turn at all. I don't know if it's a problem with the ignition switch or what. Please help. This is my family's only form of transportation to work, school, the market, etc.