Pros
These people are SCAMMERS!! They hack your email or find you on careerbuilder and discover that you are looking for a job and will call u with a random "open" position.
Cons
Most reps can't speak English; they sound Middle Eastern, they won't leave a voice mail. When you call back they don't know anything about the position or who you are, so they ask for you to verify info to find you in their system. Stuff like your first n last name, date of birth, ssn, email, phone, etc. DO NOT TRUST THEM!! Probably identity thefts or are using your information to open credit accounts/loans in your name. They have made a whole website to play it off like they're legit. And write their own reviews on glassdoor. They are very smart, but fake people!! They call multiple times/day!! BEWARE!!