In case that leads nowhere, you should raise a complaint with you local data protection agency, for example https://ico.org.uk/make-a-complaint/
I’ve been trying to escalate it to a manager, because I feel once the Irish data authority gets involved it will be handed off to legal.
Because killing your own account can be easily done by posting objectionable content.
honestly spam is the easiest and safest way to get banned. easy to automate as well. doubly efficient if you scrape the site to power your bot.
that's ideal if they are ignoring GDPR protocol, right? it'll make for glacial progress, but you did say you've been at this for a year as is.