I read the same info on acai berry last week or so. Did not want their offer and closed the web site. Then I began getting these phone calls. Switchboard.com said it was in Jersey City, New Jersey but I had to subscribe for $.99 cents or $4.99 to get the complete info. I would not put my info in to any web site since I was once scammed by Pay Pal.
this number started calling me around 5pm and has called every twenty minutes or so. I don't pick up the phone. But what you said about the Acai berry, I went to that web-site a few days ago and never signed up. Could be on to something.