I have been trying to get a collection agency to verify a debt (signature proof). They obviously don't have this information and it's been over 60 days, so what is my next step? I was going to send the estoppel (this one: http://consumers.creditnet.com/straighttalk/board/showthread.php?s=&pgnum=1&postid=85492#post85492), but the heading says it's for a CRA, or creditor. So my question is, does this also apply to a collection agency? Thanks in advance.