Unless you have the "slim Jim" tool to do this you bascially have 2 options:
1. The police will do it for free
2. A tow truck will do it for around $25
3. a mobile locksmith
I wouldnt advise trying to "pry on the door or window to snake a coat hanger in there,,,stand a chance of breaking something.
If you have any further questions, please feel free to reply.
Thanks for asking!