TalkSugar allows calls from all over the world.
Create Free account and get 5 min free to try it out.
You can use your own phone number to connect or set up a new one via Skype (blue banner below).
NF is only allowing you to call me if you are in US or Canada.
If you want to call me, but you are located outside US or CANADA:
You can either sign up for a SkypeIn or Yahoo Phone number service and get an US based phone number, then you use it with NF service.
Or reply back to this post with your email address to get in touch with me.