Also what you can do after disputing it with the CRAs and requesting their method of verification like Chane said.......is send the clerk of the court a letter asking what their procedures are for verifying records with CRAs (send along a self addressed stamped envelope to make it REALLY easy on them). They will write back saying that they do not verify records with the CRA.
And there you go.....proof that the CRA lied. You can send a copy of that letter along with a redispute letter. That will usually get you a delete.