Who called from 2072210816

I got a robo=call from this number at about 3:57 pm today (4/17/13).  I have also turned it in to the national do not call registry.   The recorded message started out "If you are a senior who could be in danger of falling".  It was a male recorded voice.

I got a call from this number about 4 pm today...I never answered the phone once I didn't recognize the number.

Got the call at 11:50am today.  No one answered when I picked up.  Caller ID was "Service Department".

Called-left no message  Came up on caller ID as Service Dept.

Now appearing in CID as just Portland ME.