If you don’t recognise a purchase made with your card, contact the seller first. If you are unable to contact them or resolve the issue with them, block your card in Netbank or Nordea Mobile or call the Blocking Service, tel. +358 20 333 (24/7). Report the transactions you don’t recognise to Nordea by filling in the card complaint form. Please note that you can only file a complaint about finalised transactions and not authorisation holds. See the instructions for disputing card transactions. Here you will also find the cardholder dispute form and instructions for submitting the form. Note! You can report transactions made with credit cards issued by Nordea (card numbers starting with 522) in Nets’ online serviceOpens new window.