Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
You can get a computer phone service, if you have a Windows PC (and a few other things, minor details.)
It could even be free-of-charge, for local calls at least.
Would you be interested in this?
You might be able to get some phone service set up on the Mac too... if you like I can continue to help you.
If you wish to cancel this, then just not responding to this, would be sufficient signal. Thanks!