The words in my head are “Breach of Contract” and “Fraud”
Treehouse had an agreement with Wordpress. Wordpress provided communication resources to Treehouse, and was, at least, able to gather usage data on Treehouse. That is an agreement to exchange things of value, on agreed terms. That’s a contract. If Wordpress cuts Treehouse off, on the pretext that Treehouse breached the agreement, when Treehouse didn’t breach the agreement, that’s breach of contract, and fraud. Someone with legal training could do better than I, as to whether anything can be done with this.
13. Termination
We may terminate your access to all or any part of our Services at any time, with or without cause, with or without notice, effective immediately. We have the right (though not the obligation) to, in our sole discretion, (i) reclaim your username or website’s URL due to prolonged inactivity, (ii) refuse or remove any content that, in our reasonable opinion, violates any Automattic policy or is in any way harmful or objectionable, (iii) ask you to make some adjustments, restrict the resources your website uses, or terminate your Services, if we believe your website’s storage or bandwidth usage is out of hand and burdens our systems (which is rare and typically only occurs when a website is used for file sharing or storage), or (iv) terminate or deny access to and use of any of our Services to any individual or entity for any reason. We will have no obligation to provide a refund of any amounts previously paid.