Scammers posing as Carnival Cruise Line customer service representatives are tricking passengers into giving away personal information and money. Carnival Cruise Line is not charging passengers a docking fee – it’s a scamArthur L. just had a simple question about his upcoming cruise, so he googled Carnival customer service. Cruise scam alert: Carnival Cruise Line passengers are being tricked into calling fake customer service numbers. Just weeks later, Amy S. had her own brush with a fake Carnival customer service line — and it followed the same playbook. There are numerous Carnival Cruise Line Facebook groups and Reddit threads created by people who have a desire to share experiences and discuss the cruise line.