Atm card lost

Hello All...
I just realised that I lost my Atm card yesterday when I went for shopping in Kaufland...what can I do since today being Sunday to block the account. It's Raiffaisen Bank in Krumbach.

There is a 24-hours-hotline for cancellation of cards, which you should call. The number must have been given to you when you opened the account and received the card. Check the paperwork you received then!