I know someone who went to a government hospital for very minor treatment, he was given the price of 500 odd Bt written on a piece of paper, the previous cost for the same treatment at the same hospital was 300 odd Bt, in a proper itemised invoice.
So what? I asked you why anyone should have to produce an itemised hospital invoice that details their medical treatment to anonymous AN posters on this forum? For some odd reason you seem to be assuming that no proper invoice was provided in the case that is the subject of this thread. That is almost certainly wrong as an insurance claim was made which would not be possible without a proper bill.