Who called from 3053401454

Received a call from this number on Monday 03/01/2010 left no message
Received a call from this number on Tuesday 03/02/2010 twice 10:34 am and 1250pm
left no message.  Tried calling back recorder stated number is disconnected or not in service.
I really would like to know who this is and how they got my telephone number.

is a call from a health collection company

called me even I am on "Do Not Call" list.

Received 2 calls from them so far today, No Messages left.

Called me last night @8pm (3/5/2010) and again this morning, left no message, how do i get them to stop calling!