Key won't turn


Today after coming home from running errands with my daughter, I came home, quick threw the car in park and shut off the ignition (I heard this might cause the following problem?). After trying to head out later this afternoon, I could not get the key to turn in the ignition. This has sort of happened before,and it was always simply a matter of turning the wheel and hearing it click into locked position, then I could start the car. As of now, the steering wheel is not in a locked position, the car IS in park and I’ve turned the wheel hard to the left and and right and wiggled like crazy and still not go. Any suggestion as to how I can avoid calling a tow truck and having it taken in?