Then tell your family members to have fun in court for
obstruction of justice. No, the police won't help him find you,
they have to. It's considered as theft, which is
not a civil offence but instead a criminal offence. So no, the
doctor might not sue you for running away and not paying, because
it's not mandatory, but he's given that extra option just to f*ck
your life up even more. Guess what, you might have to cover his
legal fees as well. Fun eh?
