Many commenters in this thread are saying OP's account was frozen because of suspected fraud/money laundering. If that's true, what would "responsive support without scripted responses and black hole email addresses" entail?
The standard line in cases like this (whether it's a frozen payments account, a rejected app, or a suspended social media account) is that you can't tell someone what rule they broke, because this gives too much informative feedback to actual malicious actors about how they got caught. I call bullshit. Until someone can demonstrate that this is an actual problem, I will believe it to be a fake problem, purely an excuse used by giant companies to justify their systematically hostile (and cheap) approach to customer service.
If a payment processor suspects money laundering, it's illegal for them to tell the business that. Under anti-money-laundering legislation, this is considered a crime called "tipping off": https://onlinelibrary.wiley.com/doi/10.1002/9780470685280.ch...
(Disclaimer: Used to work at Stripe, but not on this particular area. Not an expert on either the law or Stripe's policies.)
This point is always repeated, and never proven.