How do I contact Klarna? You can contact Klarna anytime at www.Klarna.Com/Us/Customer-Service/ or by downloading the Klarna App for 24/7 chat. Related articles How does the Dooney & Bourke Repairs & Replacements Program work? What are the Klarna terms and conditions? How do I pay using Klarna? Will using Klarna affect my credit score? What is Klarna?