The rich, the young, and the unhealthy — these are the people who believe that they're not getting a fair return on the dollars they spend on health care.

PricewaterhouseCoopers wanted to find out just how unhappy consumers were with the current health care payment system in the U.S. Going into the survey ("Money Matters: Billing and payment for a New Health Economy") with the knowledge that health care billing is at least a decade behind the billing practices followed by every other industry, PwC put a series of questions to some 1,000 U.S. adults designed to dig deeper into the general dissatisfaction with health care payment systems.

What emerged from the research was perhaps a bit unexpected. For instance, the wealthiest people in the survey — those making six-figure salaries—were by far the most unhappy with the health care payments system. The youngest respondents — those oft-studied millennials — were the most likely to go nose-to-nose with a billing department over a bill. And those who required more medical attention than others in the study — in other words, the people with the most experience trying to figure out bills and charges — were also quite dissatisfied with the system.