I used google and my android app white pages and came up with this. The number shows up as Esta Sol from Omaha, NE.
I also found a site with a few complaints on this number.
Just for future references:
1 - Do not apply for anything you do not know about.
2- Do not give any information over the phone to someone you do not know.
3 - Free is never free!!!!
Previous post about telemarketing calling
- Do not call me!