This is probably going to get buried in the replies, but I had a similar experience with DigitalOcean about a year ago with my account getting permanently locked with very little explanation and no way of getting it back. It's still locked to this day. I was just a student using my Github student package credit, but I was pretty appalled by the service from DO and vowed never to buy from them.

Unfortunately, my ticket no longer appears under closed tickets. I was still able to dig up my original ticket message and all the responses their support made to me through my email though. Here they are:

https://imgur.com/a/NJMRnyY

Between the replies I asked about what I could do to verify my account. As you can see, they didn't even give me a single chance to do so. They told me to hang on twice then just permanently closed it up. I'm not sure how I even got flagged. All I did was turn on a droplet and delete it. I checked the audit logs, and there was nothing suspicious there either. It was just me logging in and out.

I thought about making a deal about it on Twitter, but I didn't bother because I don't have any followers and it wasn't a huge loss to me either. Maybe it's the only way?