Woow, well thats a pretty sad story SEAJ.
First of all, i hope your friend is doing well again!
These are that kind of stories i have heared on a regular base, well sure, not like the hospital hurts you to be able to cure you. I guess, based on my little knowledge about mainland law, there is no way to get some legal payback to the hospital?
starting with taxi drivers doing a sight seeing tour instead of using the direct way. Hotel stuff charging prices depending on their mood. Restaurant and Bar workers put some stuff to your bill you acutally never ordered or got to your table.
Lucky me, i have never been in such a situation by my own *touch wood*
All in all, im pretty sure i dont need to tell you this, you are able to find assholes all over the world. not only in china, HK, Europe or wherever else. of course, sometimes i have the feeling wherever i go, the amount of strange people is pretty high, but maybe it has something to do with myself