California's Kaiser Permanente

Ah the computer gremlins strike at health insurance company Kaiser in California. Kaiser admits that a computer error resulted in incorrect bills being sent to a bunch of people in Northern California. Phone lines have melted down with disgruntled customers trying to reverse bills for sometimes hundreds of dollars.

Kaiser sends out erroneous bills

Kaiser members find billing errors are difficult to correct

Kaiser's home page trumpets:

"Kaiser Permanente's programs in California – in which it serves more than 6 million people – received perfect four-star scores for clinical quality in an annual report from the state agency that advocates for the rights of health plan members."

But curiously doesn't mention the billing problems.