One last point on this ( I hope ).
When you do request verification do so in writing and send return receipt requested. This way you have proof of it being delivered and on what date. On day 31 get a copy of DAC again or call about status. If they say it is verified ask for copy of verification. This is not just a phone call on DAC's part. There is a form that must be filled out with date, time and person who verified. Many times a company that is still in business will balk at verifying something if there is a slight chance it may be reported wrong.
If they say it has not been verified then remind them NICELY that they are required by law to delete the entry until such time it is verified.( The 30 days has passed ).
I did not provide this information to help the bad drivers get a "free ride" but I would rather see 10 "get by" than see one good man/woman lose all they have worked for because of one pissed off terminal manager out for revenge.