The only way FB ads seem to work is to get visitors to your FB page for your company, once they are on your page and "like" it, you can post information on your wall.
Facebook is by far the worst advertising I have ever wasted money on. I even took a 6 part course from facebook as well.
As proof, here is 2 things, 1- ask 10 people if they have EVER clicked on a facebook ad?
2- If they were good, you would see ads for Tide, McDonalds, Burger King, Ford, etc... you do not, all you see are ads for seo, fiverr, get rich quick at home, etc.
Keep your money, even a 100$ a month with google will be way better.