Your County Recorder of Deeds is, supposedly, the 'official' repository of such information. However these banks often didn't bother with anything as mundane and old fashioned as actually paying the fee to have the note-holder information changed.
But I'd start there if I were you. If that information isn't accurate I'd bring the fact that your County is owed their fees to the attention of someone in the Recorders office.
Then I'd retain the services of a qualified Real Estate Attorney and show him what you've found.
Best of luck,
L
And might I add, Lurker, the person that bought the property PAID for these documents to be filed with the county recorder.