I'm not sure. I didn't get a call from this number but it is the contact number for alot of job listings on different employment websites. And the jobs won't be related either. For example, it's the contact number for an emergency response driver, a front desk/clerical worker in a doctor/surgons office, a party planner and an admin assistant for a radio station.
It's kind of a scam. It's an employment referral company that requires you to pay them a couple hundred dollars before they give you actual job leads. A friend of mine was desperate for a decent job and actually paid them, only to gain access to a PC in an office with an internet connection and links to career builder and monster.com. The jobs in the ads are usually too good to be true because they just made them up to get your money. There's nothing worse than a company trying to take money from people because they know they're desperate.