Someone made a comment about how they are probably just a collection agency trying to gather info. Thought you all might find this interesting.
http://stlouis.craigslist.org/csr/2032130579.html
That link will probably only work for a few days, but if you dont read the real ad its an employment ad for collections agents in Downtown St. Louis. The email address is listed as MZimmerman@protectiondirect.com.