Quote from @Danielle Levy: Lesson learned: provide the full story up front and you'll get better advice.If you feel there's a case, put together all the evidence.

No, I've not invested with SCDC, and it's not likely I will without evidence they can do / have done what they've claimed on their web site.

If the note was just an IOU to evidence a debt, it wouldn't have value, thus, couldn't be sold.

I love how Airbnb just pay me based on the evidence without going through 6 months legal battle or 3 years of collection hunting. 

I wanted to use the camera footage as evidence in a civil case against the tenant.I was initially told that it would take 2 weeks to get the footage to me, then that blew out to several months, and now finally 6 months later they finally get back to me and tell me the footage doesn't exist, even though the initial report said cameras were activated.That footage would have shown that the tenant was making threats to damage my property (which she made good on).Do I have any recourse on the police for failing to provide the footage on a timely basis?

Then the tenant will rant a bunch of nonsense, have no evidence to back up his stories, and the judge will find in your favor based on the evidence provided by you.For future tenants, I highly recommend you read a book like mine or "Every Landlord's Legal Guide" by NOLO.

Then, gather evidence like recent sales of comparable properties to support your case.

After all, you have no evidence they agreed to pay rent or any of the other terms.

The committees have never said they'll require a specific form of evidence to show that you've rented the place for at least a couple of nights.

You should never let someone into a unit without written evidence that you have authorization to do so from the lessee.