The caller from this caller id left an 800# for which I searched and took me here:
http://800notes.com/Phone.aspx/1-800-232-1258
Message said this is michelle smith please have [name] call back with following reference number [number]

ARS collection agency I guess.  I've never spoken to them.  Don't plan to either.  

Maybe I'll send them my "This letter is an effort to correct your records, any information obtained will be used for that purpose" letter.