On 25 March 2024, our account with the Berliner Sparkasse was frozen with immediate effect. In a letter, the Sparkasse informed us that it had taken this step as a precautionary measure and that we should submit numerous internal documents by 5 April to update our customer data. As a public corporation, the bank is bound by public law and may therefore not arbitrarily freeze accounts without providing an explanation, which it did not. It is also highly unusual that the required documents include a list of our members with their full names and addresses.