Who called from 4065584656

I did not answer the call because the caller id was "out of area".  Called the number back and it was an auto attendant that said "United Breast Cancer Foundation".  I do not know if this is a scam.

answered the call and no one said hello.  I said "oh, I wonder who this could be".  Then after a pause a women said is this Mrs. Reyes?  I said nooo.  I had the feeling the person was trying to see if I was home.

Received a call from this number and they hung up when I said hello.
Called it back and also found it to be the United Breast Cancer Foundation.

Also received this call with no response when i picked up.  I waited for them to speak and nothing.

I called them back. (after they had been calling me for weeks!). No response! Likely it is the result of FORMER/EX wife and Stepdaughter who are not courteous enough to change addresses and phone numbers (reflecting where they live and how to reach them) in order to avoid calls like we are experiencing. Thier STUDENT LOANS and CELL phone accounts are in collection status. ANYbody have a guess as to who paid these before? Somethings really die HARD i've come to find out.