Deactivated Account : How to Reactivate when Amazon doesn't accept your supplier invoices?

Amazon asked me to submit supplier invoices to prove authenticity of the products in question but I already sent them they keep saying it's not enough. I don't have any other document to provide, I also asked them to just delete the product from my product listings. They removed all my product listings but only questioning 2. My funds are on hold, I have a lot of inventory in Amazon Warehouse Germany and I have no way to call Amazon to clarify what else is needed to appeal my account and get it reactivated. They also keep saying different things in Performance notifications like I have multiple accounts which I do but these are 2 different registered business in 2 countries (UK and Switzerland). I just don't know what else they need from me or how I can contact someone from Amazon directly. My Account Health is also "Healthy" and there are no pending policy violations. What else is needed??