Has anybody sued Amazon as seller on here before? (UK)

A little about me : I am UK based, UK Citizen born and bred etc etc

My company on companies house is based here everything is done through the UK

About 6 months ago, Amazon blocked my account saying they did not believe I was based in the UK.

My account has 4k in funds on hold

I have provided the evidence they need, proof of company, proof of warehouse, proof of myself etc this was done via email and a video chat (They saw me I did not see them)

They are still saying I am not UK based

The easy option would be small claims, but this is Amazon and I have googled similar stories where they claim they are not Amazon UK but Amazon EU based in Luxembourg and I need to sue them

Just seeing if anybody else has gone the legal route with Amazon and what did you do?