I was online doing a job search and thats how they got my number. I never requested aid either but i guess once they get your number they call anyway. Last time they called i answered, told them i found a job, and all the calls from all the different area codes stopped. Try that, gl!
It is Career Institute calling to sign you up for classes. Just call them back, it is automated and listen to press 2 to remove you number from their listing.