What is the fine-grained topic of the following text: The station can be reached by writing to Ejército de los Andes Nº 5, del Barrio de Villa Fiorito (Banfield Oeste), Partido de Lomas de Zamora, Provincia de Buenos Aires, or by calling at (011) 4276-2423 or 4267-8740, as well as by email. Only return the topic.
Contacting a station in Buenos Aires