That was the first thing that came to my mind when I saw the thread title! We love that commercial and DD and I go around saying (in a really horrible accent) all the time!
Dawn, Good for you! I think you absolutely did the right thing. And I agree that if the parking area/access are not maintained then I wouldn't be shopping at those businesses either, so they need to know why they could potentially lose customers. Even if I hadn't lost a tire, the worry about the damage and just the discomfort of driving through a pothole filled road would cause me to shop elsewhere.
And judging by the immediate response from the Property company, you DID find the button to get something done! You called, tried to work this out amicably and got the brush off so I absolutely support your decision to email all the tenants.
And here is a definition of blackmail:
As she presented the facts up front there is absolutely no blackmail. She made no threats. And since the facts are true she couldn't even be accused of libel.
I hope you get the full $300! Let us know what happens.