Account Deactivated with no reason, no warning when we have no violations

On Friday out of the blue I received a text message stating our account was being suspended due to a policy violation. This seemed to happen following a series of weird events on Thursday when I got several notifications that we'd been enrolled on remote fulfilment across most of Europe (which we as a business never asked to be!). I'd not changed settings in my account, only ensured we were only setup to ship within the UK. The text came shortly after I logged in to check this.

Oddly, there was no detail of what policy had been violated, but my account health showed we had perfect account health and no violations. Which can be seen from the picture below. When I tried to reactivate the account it asked for a utility bill dated within the last 90 days, which I supplied but still no luck. I called several times and eventually spoke to somebody who told me that we had failed to video verify our account (we did a video verification in 2023 as part of our account setup) but we did not receive any emails asking us to do this, nor any SMS message nor any cases within the support area (which is previously where all were received). I went through our email folder, including spam. I even asked IT to review the server logs for the past 3 months, and nothing matching the email Amazon claim to have sent us.

I spoke to a support assistant who said they'd raise an internal review as clearly, based on our account having perfect health, us using FBA, having a registered copyright branded store and paying for Amazon Ads services then they believed the problem is Amazon's.

Yet today I've received an email saying Amazon will now hold our funds then destroy or return our stock and deactivate our account. This time the wording was stronger and says we have violated policy (but again does not state what policy or what the violation is)

Has anybody else had this nonsense and what legal action might be possible against Amazon? I'd like to resolve the issue and return to selling but to take revenue and destroy stock without reason or warning seems beyond the pale and borderline illegal if no valid reason is given as per their terms and conditions of using the platform.