Has anyone heard of this Frontier Publishing Inc. Company that supposedly sets you up with government jobs?

Answer 1

A private company can't set you up with a government job - you take a civil service test to get on the list, then if you score high enough you might get interviewed and might get hired.

What these companies do is charge you, often several hundred dollars, for a study guide that you could get on Amazon.com for $20 or so, and info on how to take the test which is available on government websites.