@Rhonda E. we certainly do run into situations where people falsify the information and give their friends phone numbers. There are several ways to combat this issue;
- ask loaded questions. If the applicant completed the rental application they should have provided information such as their monthly rent amount, the address of the rental unit, and their move-in/move-out dates. These are all things that a landlord/property manager would know when asked "how much are they paying for monthly rent", but a friend who is only prepared to say "they're a great tenant" typically doesn't know the detailed information. This makes the no-blank-spaces-policy on the rental application all that more important.
- another way to ensure you're talking to the right person is to verify the number provided. Any landlord can this through a google search. If they provide a number that supposedly goes to Village Green Apartments, but the number shows up in google as a private cell phone, there's an obvious red flag. We have the luxury of using our databases to see the exact person the phone number is registered to, so verifying even private landlords can be done.
- use their address history on a screening report to fill in the gaps. If they claim to have lived at only 2 residences over the past 3 years, ask them to explain why 4 addresses are showing up within that time period.
Finally, to answer your question directly about having an instance where we did not catch someone falsifying information - yes, this has happened. It's not often, due to the fact that we have a lot of tools and procedures in place to avoid these situations, but I have seen some sophisticated bad tenants. We had a case several months ago where a woman went as far as creating a website to look like the property management company that was renting to her. She listed her boyfriends phone number as the contact number and when we typed it into to google to find the business everything looked legit. When we called the boyfriend he was well prepared to answer even detailed questions. Thankfully she had a handful of judgments and evictions so the landlord made the right decision in the end and didn't rent to her.
As I said, these are rare cases and unfortunately there will always be people who will go way out of their way to beat the system. But as landlords all we can do is have solid screening procedures in place to catch these and perform our due diligence. Tenant Screening is a lot like hand sanitizer that kills 99.9% of germs - there will always be that small percentage that slides under the radar.