These people have called 3 xs.  The first time they called from #(636) 220-4263 on Dec 19th, 2008 @ 12:29pm MST, at which time I did not answer and no msg was left. http://800notes.com/Phone.aspx/1-636-220-4263#pBA66bLm2VgBVnAjLMpOd1g

The other two times they called from (636) 220-4264.  The first time was on Dec 20th, 2008 @ 11:35AM MST and they asked for Jacqueline Hawkins.  I advsd them I don't know who that is and they said they were trying to deliver a package to her.

The third time they called was this morning Dec 22, 2008 at 11:10AM MST and they said they were trying to deliver a package to one of my neighbors and asked if I could help them.  I said last time they called they asked for someone I don't know.  They gave me an address and asked I lived there and I said no.

I think they're skip tracers for a debt collection company.

I think they’re skip tracers for a debt collector called EBO Financial.  They’ve called me 3 times in the past 4 days.
I’ve notated each call on 800Notes.  Then a did a google search for 800Notes Ballwin MO and this is what I found.
314-443-4670: http://800notes.com/Phone.aspx/1-314-443-4670 
636-220-7376: http://800notes.com/Phone.aspx/1-636-220-7376
636-220-4263: http://800notes.com/Phone.aspx/1-636-220-4263 
636-220-4264: http://800notes.com/Phone.aspx/1-636-220-4264#pIBONBR23VgAxYgjLMpSPYA

Also: 636-220-7359: http://800notes.com/Phone.aspx/1-636-220-7359

I received a call today (Tuesday, Feb 17, 2009 at 9:30 am) from (636) 220-4263. A lady said she was trying to deliver a package to my neighbor and gave their address and asked if I knew if someone lived there. She mentioned a name and I said I had no idea. Then I asked her how she got my number and she hung up the phone. I tried to call back the number but a recording said it was a non-working number. I checked on the Internet and it is a working land line number assigned to a:

(636) 220-4264
Type: Land Line
Provider: Charter Fiberlink
Location: Manchester, MO

Its a skip trace company that works for lawyers.  They are trying to verify your address so they can serve you with legal docs.