I hate screening people with common names, but the false matches can even happen with uncommon names.

Now the buyer's are making false claims and seeking to keep our security deposit.

It is actually considered false advertising and violates Craisglist terms of service.

In my experience, people who feel the need to claim fake service dog status, or to claim a false disability, usually have other issues going on that disqualify them as tenants, such as poor credit or eviction history. 

As I have been saying the last few days, comments like "people always need a place to live" can give you false security.

So no, his statement is false.

It's something most people only hear (false) horror stories about and so people will use a Landlord's lack of education to manipulate the situation.As for the legality, you are under no obligation. 

ALSO, say things like "..it sounds very violent, like they are fighting" BUT, be careful not to lie or make a false report when the operator tries to get you to be more specific, just keep saying it sounds like they are fighting, and I can't really hear exactly what's being said, but "...they are being angry and violent sounding" ....keep it vague and if they try and over question you, like they do in LA to avoid the call, just tell them your doing your part and reporting the problem, you are not a professional psychologist or crisis interventionist, they should send someone who is, like Police!

Great question and as usual fear mongers prove to be false.

You could address that with a clause that says giving false information is grounds for termination.