If you have lost checked baggage or taken the wrong bag off the belt, you need to contact the ground handling agent for your airline. For more information go to your airline’s website.
Overview of handling agents at your airport: Choose airport, click on the menu and select contact. Here you will find contact information for airlines and their handling agents.
When you call the airport, all major airports have a dial option for missing luggage. You will then be transferred to a handling agent.