I got a call from this exact number, i picked up, and he said he was from a business school, i couldn´t understand which one on the phone because it was very loud in the shopping mall i was in. He identified himself as "Luis" and new somehow that i had taken the GMAT recently.
Today I got the same call..and I talked about GMAT, TOEFL. As far as I know it's Hult University since it's the only one I applied for my master studies next year. I wrote them an e-mail some days ago and they called me today at my father's cell phone. I am in a such doubt how did they get his phone no.
It's legit. Asked for an e-mail with more information and received an e-mail from a Student Recruiting Coordinator at HULT International Business School (http://www.hult.edu).