Number I called is 1-800-375-5283. Whenever you speak to anyone they give you their ID BEFORE they start talking to you.
Mario, don't mean to suggest you what to do but I would wait and give little more time. I made my first call on 90th day as it officer at the interview said if I don't hear anything until 90 days then contact us...so I did and i'm continue doing it until I hear 'something' that sounds 'right'.