I keep getting calls from this number also. For anyone who has a blackberry, download a free application called NUMBERCOP. I did and it blocks this number for me. Actually, it doesn't block it, it PREVENTS me from picking up the call and reports it right after. It works great! I'm sure other types of phones have applications you can download to block spam calls.
I believe I accidentally got on this list when my son tried to sign up for some scammy gift card thing online yesterday through one of his game sites - I thought it was legit and it definitely wasn't. Oh bother. I haven't answered yet...