Find a payphone or borrow a phone, call in an suspend your service so they don't run up your bill.
Then dig an old phone out of the drawer, go to your local service provide (Verizon store, AT&T store, Sprint store etcetera) and they will load your old phone number up to that phone. They cannot save your contacts.
Turn service off to your stolen phone.
If you don't have an old phone, search online at Amazon or one of those places for a cheap one. You just need one to keep you going until your plan renews. Then you can get a better one for almost nothing.