The number of times I've seen a bill that made no sense and been told, "oh, yeah, you're not misreading it, it's a bill, but you can ignore it because [reasons]"... WTF are they doing? Seriously, no-one else gets away with being so entirely sloppy.
Then there's the wonderful "we sent you one bill for a trivial amount which you probably lost in the pile of 50 other damn bills from 20 different providers, many of which were bills but didn't actually need to be paid (see above), plus twice that many not-bills-but-still-kinda-look-like-them statements of benefits and whatnot, didn't send a followup or call you or anything, but now you're in collections for $90 or whatever and your credit's dinged, sucks to be you".
Then if there's a dispute with insurance the hospital/providers will harass you until it's over. And sometimes just try to bill you even though they know it's being disputed. I guess they think you're not already spending enough time on the phone fixing their screw-ups.
I'm not necessarily in favor of fully nationalized healthcare exactly (some form of universal health care, yes) but it'd almost be worth having the government directly take it all over just to drink up those sweet, sweet hospital billing/admin and insurance company CEO tears. I truly wish everyone involved all the worst.