My car engine starts, but I can't get the gear shift out of park.

What is your question?

This is the 3rd time. Once 4 weeks ago,we waited 20 min. then played around with shifter and everything was ok. The first time was a year ago, in 20 degree weather. Went to start it and could not get it out of Park. Let car warm up, played with gear shift and about 30 min. later got it into park.