You can have your bank and payment cards blocked 24 hours a day by dialling the following numbers: In Germany: 116 116 From abroad: +49 116 116 or +49 30 40 50 40 50 The following details are needed to have a block put on your card: girocard and bank cards: account number and ideally the bank sort code (Berenberg: 201 200 00) Credit cards: name of the bank or alternatively the bank sort code (Berenberg: 201 200 00)