Sources

The third-party research behind the numbers we cite.

• National Customer Rage Survey (Customer Care Measurement & Consulting) — problem prevalence and complaint outcomes.
• Groundwork Collaborative — research on the time and money Americans lose to the corporate runaround.
• Forrester — Customer Experience Index research on tiered service and satisfaction gaps.
• KFF (Kaiser Family Foundation) — analysis of denied health-insurance claims and appeal rates.
• Federal No Surprises Act independent dispute resolution — public arbitration reports (CMS) and related reporting on provider–insurer billing disputes and payment collection delays.