Any recommendation which service provider has the best rate to call the US?

Anyone know of a service provider with the best rate to call the US? Some of our folks do not have FB accounts which is the best way to call via messenger since it is free and of course there are the 1-800 numbers that we need to call. Any recommendations or suggestions are greatly appreciated. Thanks!

 

i use a VPN and viber with a us number

 

Skype

 

magic jack works well.

 

Thanks for the info. My friends in Korea use Magic Jack but I didn't know you could have it here and how? I'd be interested to know how to obtain this service. I use Skype, Viber, and FB messenger but business establishments in US that provide the 1-800 numbers and old folks who are not fond into signing up in social media are hard to reach as it is also expensive using prepaid card being that it would sum up to about .56 cents a minute. I would appreciate if you could give me an info on magic jack. Thanks!

 

Opppss never mind I found the Magic Jack app and was able to call the US 1-800 numbers. Thanks for pointing me to the right direction. Really appreciate it!