1999 cavalier

i have a 1999 cavalier. when i took it to get the inspection done this last time, the guy put in the wrong key. after he was done, i would have a little bit of trouble starting my car, but not too much. this morning i spent almost 45 minutes trying to get it to start. the key will go in, but it won't turn at all. i don't know anything about cars, so can someone please tell me what i can do, please?

That happens with my key that I had made from the original. For some reason, it's like one side of the key doesn't work and it won't turn at all. So I can the key out and flip it and it turns.

or if the wheel is locked up, try turning the wheel and the key at the same time.

or if the wheel is locked up, try turning the wheel and the key at the same time.
Lol, yup that could def. be the pickle..