The guy was an employee of a local company. He cold called me. I was busy so I just hung up, but I did hear the company name.

Then I saw a bad review left by someone pretending to have been a customer of mine. He used his real name as it was a google review.

I googled, found out he worked for the company that had called me. Spoke to the owner, gave the owner the info. He said he'd look into it.

Called back 30 min later, apologized for his employee's actions, said he disciplined him and got him to admit his action was petty and wrong, and he made him take down the review.

Real life leverage is a powerful thing.