Home Phone Bundles What Is The Chapest Way To Call To Foreign Home Phone From Prepaid Cell Phone Or Through Internet?

What is the chapest way to call to foreign home phone from prepaid cell phone or through internet? - home phone bundles

I pre-paid mobile phones and internet access, and have no home phone. My parents in Japan and have no access to the Internet. Is there a cheap way to make calls via Internet or prepaid cell phone? I have no money to a landline or mobile monthly rent ... I've got your phone call at home ... Thank you!