Klarna has both online and telephone customer services. Please see below for contact details in your country. If your country is not listed below, you should turn to Klarna, United Kingdom.
Austria: (+43) 720 883 811 https://www.klarna.com/at/kundenservice/
Belgium: (+32) 28080601 Fr: https://www.klarna.com/fr-be/service-client/ Nl: https://www.klarna.com/be/klantenservice/
Denmark: (+45) 69 91 88 81 https://www.klarna.com/dk/kundeservice/
Finland: (+358) 09 425 99771 https://www.klarna.com/fi/asiakaspalvelu/
Germany: (+49) 0221 669 501 10 https://www.klarna.com/de/kundenservice/
Italy: (+39) 023 792 1240 https://www.klarna.com/it/servizio-clienti/
Klarna International: https://www.klarna.com/international/
Sweden: (+46) 8 120 120 10 https://www.klarna.com/se/kundservice/
Norway (+47) 21 01 89 91 https://www.klarna.com/no/
The Netherlands: (+31) 20 8082852 https://www.klarna.com/nl/klantenservice/
Spain: (+34) 911 391 220 https://www.klarna.com/es/atencion-al-cliente/
United Kingdom: (+44) 02030050833 (local rate) and (+44) 080 818 93333 (freephone)https://www.klarna.com/uk/customer-service/