The tracfone has a limited number of minutes on it, but does anyone know anything i could do so that i could make phone calls for free?

The tracfone has a limited number of minutes on it, but does anyone know anything i could do so that i could make phone calls for free?

Please help me I realy need this VOIP service to make free international calls using the Internet. Thanks in advance.
I would like to make phone calls to USA for free.

I want to try and call my friends that don’t have skype. I am living in Argentina and need to make phone calls to my friends in the U.S.

I have bought so many phone cards and they only give me 15 minutes or so. I heard once before of a company that gives you a phone number for your computer that people can call you for free. Anyone know of this? I hope someone knows of something to help me.