The travel agency owed me 3,000 yuan for the hotel room, so I called the police. Can the police get it back for me?

The police deal with criminal and public security violations, and ordinary economic disputes are not within the scope of police business management (unless they are fraud cases).

It is useless to call the police in this case. Suggestion:

Send a formal collection letter or lawyer's letter to the travel agency.

If it doesn't pay, you can prompt it to inform the customers of travel agencies of "ugly" things, publish the facts on several travel websites and so on.

If you don't compromise, the last resort is litigation.

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Do you have a travel agency card? Does the travel agency have a name? Can't you find its address by name? It's impossible. There's always a way.