Amazon Europe - Withdrawing balance

I am not able to withdraw the majority of the balance on my account for Amazon Europe. It does not show as funds available. For example on Amazon UK my total balance is 9376.47 GBP but the funds available is Zero. This is a huge amount of money that amazon is withdrawing and on Amazon Germany it is even higher. It seems Amazon is holding 85% of my funds, this has been going on for 3 weeks now.

The cashflow for my business has been destroyed and this is having a significant affect on my business. Amazon support have not responded for 3 weeks and when I try calling they have no idea how to help and just send a message to support on my behalf which I never get a response to. I have been unable to withdraw any reasonable amount of money for 3 weeks. This issue will destroy my business, I can pay any bills, tax liabilities or new purchase orders. I have been selling on Amazon for over 14 years.

Can anyone help?