Start somewhere safe
If you are outside at night, move to a well-lit place where you can comfortably make a call. If anyone is in immediate danger, contact the emergency services.
Check for an authorised spare
Contact a household member, landlord or other person who is authorised to help. Do not attempt to climb to a window or force the door.
Prepare the essentials
Give the locksmith your address, whether the door is locked or simply closed, and whether your identification is inside. Confirm the quote and estimated arrival.