Citizen Services and Attention Citizen Services and Attention Citizen services and support We provide the public with the following telephone support channels and services. Channels available for citizen services: Administrative headquarters Carrera 50 No. 44 - 27 Medellín - Colombia Conmutador: +5745117505 Schedules and services: The main administrative office provides services Monday through Friday from 7:00 am to 12:00 pm and from 1:00 pm to 5:00 pm. To find out the hours and services of each service point Click here