I received a call from this number at 10 AM MST but did not answer.  I did now know of any Intercessors For America. I did a search and found that Intercessors For America appears in: Church & Religious Associations & Organizations.  They are located at 192 N 21st St, Purcellville, VA 20132 and their web site is http://ifapray.org
I think they are a prayer group.