Yes - Anyone who's FAQ answer to "How to avoid being scanned" is "We don't have an opt-out, you must block all these addresses" isn't behaving like a legit business.

"Nice network you've got there."

"We noticed something might be open. We're not telling you what it is."

"It would be a pity if something happened to your business."

"Give us lots of money."

Sounds like a movie strong-arm thug.