Integrascan.com False report. Entered one paid, cleared traffic ticket as seven (7) criminal records and reported same to potential landlord, which cost me money, damaged my reputation, and prevented the rental. Internet

Integrascan is an internet based company that provides "instant criminal records and background" to subscribers.
On August 20, 2012, Integrascan falsely reported to my prospective landlord that I had 7 criminal records with Orange County, CA Superior Court.
On checking with the court, the only record found was an old (2004) traffic ticket that had been paid and dismissed with traffic school in 2005, recorded 5 times.
There was one other case number, but it turned out to be "not found" and "no information." It was reported twice.
On phoning Integrascan (5 times), I got a recording stating that all representatives were busy helping customers and that I should email them for immediate response.
When I emailed Integrascan, I was told, "You need to file an adverse action letter with the
landlord in question.  We are just the provider of information through and we can not be held res[ponsable for actions taken by a land lord in regards to the information provided to them."  (sic).
A further email  elicited the following:
"We can not deal with you directly as you are not our client and the landlord had no right providing our report to you and is in breach of contract. Your only recourse is through adverse action
procedures.
 Any further correspondence will only be handled by our legal department via postal mail due to your threats of legal action.

I lost the apartment, the trust of the family, and had to scramble for another place to live. This led to talk about me which had damaged my reputation in the community. I have had to explain myself to others to whom they have spoken about me, all due to, at best, sloppy research, and at worst, their criminal negligence, for which they claim, "Not responsable"  spelling theirs).
What action can I take to protect my reputation against these egregious errors?