Phone calls
The cheapest way is to go to the "locutorios" (phone booths inside mini markets or simil) they are EVERYWHERE and you'll be able to talk for almost nothing. Not all the places have the same rates, so it's good to ask before you make your call (they have a printed sheet, mandatory by the law)
You'll pay less than a dollar for 10 minutes...
Skype is also a great option to receive calls IF you are in a place with good internet connection (double check, a lot of hotels will have a snail speed conection!)
I am from Argentina and I live in the US and I visit twice a year, so trust me on this one!



Puerto Madero, Buenos Aires, Argentina
Palacio Noel - entrance door
Liz & her new Jacket
Rob clowning in the background