This is a page with all the phone numbers of taxis that you can order by phone. http://www.radiotaxisyremises.com.ar/
Pay attention to those who are in blue, are the safest and recommended ones. If you are in Buenos Aires, you can call them. But , if not some have web mail site to see. Remember that the journey is long and almost impossible to do by bus. I also recommend shuttles.
Enjoy Buenos Aires! about 8 years ago