I'll provide an example...while heavily medicated after breaking both of my legs I signed something on an Ipad, once. I asked for a copy and they weren't able to provide me one. After more than a dozen phone calls I was finally able to get a copy. But that involved figuring out whether it was the company that rented me the wheelchair, the company that billed me, the company that billed my insurance, or the company that owned all of those companies. They provided me three documents I had signed with not the same signature on them. Then when I asked them to pickup the 'rental' that they never told me was a rental, it took five phone calls and over two weeks (during which time they billed me and my insurance for another month of renal). They finally came and picked it up within three hours when I had the news reporter who covered my accident get in touch with the CEO's office.

I reported all this, with call recordings, logs, notes, etc. to my insurance's fraud hotline and they closed the file without doing anything.

Much of health care in the US is wrapped in a blanket of outright fraud. You can't agree to be a victim of fraud. Until I get to charge them for the time I spend correcting their billing mistakes I am totally fine deciding what bill is appropriate and what bill is not on my own.