A cop has nothing to do there, these matters are not solved this way, if they happen to do that just tell them you are calling 911.
You can report them here ( and tell them you are doing it, just so they will never be able to rent this property to tourists )
Tourism Assistance Program
Foreign Tourists from any part of the world can go to our offices in order to solve problems as consumers
When a company doesn't fulfil the terms of a commercial transaction, for example when a bought product lacks of normal conditions for its use because of a failure, or a service is not provided according to the contract, the purchaser can file a complaint before the "Dirección General de Defensa y Protección al Consumidor del Gobierno de la Ciudad" (Bureau of Consumer Protection of the Government of the City of Buenos Aires).
The complaint must be filed personally by the holder of the transaction in
“Centros de Gestión comunales” (CGPC – Community Management Centres).
Legal requirements to file a complaint:
Having acquired a product or service within the City of Buenos Aires.
The complaint must be a final consumer.
Required Documentation to file the complaint.
- A note telling the facts.
- A recipe of the transaction: recipe, ticket, contract (original).
- Passport or document of MERCOSUR
The complainant must submit original documents (1 - 2 - 3) together with a set of photocopies for the Consumer Protection Bureau and one set for each company involved. Originals must be kept by the consumer.
Having the complaint filed, the consumer together with the Authority of Application (the Consumer Protection Bureau) shall choose the date and hour for the conciliation audience in which both parties are met in order to reach an agreement. If you stay in the city for a short period, you may empower a person to follow the process of the complaint. In cases the authority considers appropriate, he may request the company to end its conduct in an immediate way. Besides, telephonic mediations can be made in order to solve problems in a shorter period. In both cases, required documentation is essential.
If both parties of the complaint reach an agreement, a joint instrument with specific details must be signed by them. Both parties are bound to fulfil such agreement.
In case of not reaching an agreement, the instance of conciliation ends and the file is sent to the “Dirección Judicial” (Legal Department) in order to decide if there has been an infringement. In this instance, consumere is not considered as a party of the complaint, and the Authority of Application acts as a governmental bureau.
The company in question may be imposed to pay a fine. The minimum amount fixed for an infringement is $ 500 (five hundred pesos), and the maximum amount is $500.000. (five hundred thousands pesos)
On the other hand, the Consumer Protection Bureau has celebrated an agreement together with the Faculty of Law Studies at UBA (Universidad Nacional de Buenos Aires - National University of Buenos Aires) for free legal advice. Number are delivered from 9 AM. Advice’s hours are from 10 am to 2 pm on Mondays and Thursdays at Esmeralda 340 - Ground Floor.
Important note
All complaints about privatized public services must be submitted in first instance before the company involved through a written letter. If the company does not agree with the claim, the user shall submit his complaint before the control body over the privatized service in question.
http://www.buenosaires.gov.ar/areas/produccion/def_consumidor/turista.php?menu_id=1035
If none of this works I would sell out all the stuff that has some value and is in there! ( this is a last resort id you really need that money back )