Lost bank card? Getting blocked isn't enough, you have to go to the police. Blocking is often also possible via online banking.
There are no costs for blocking the card. However, banks may charge a small fee for issuing a new card. If unauthorized people use your Girocard to withdraw or pay money, you will be liable for a maximum of 50 euros until the card is blocked, as the Finanztip portal informs. The bank will then cover the resulting costs.