my father died in GCH 2004. received a bill in 201...

my father died in GCH 2004. received a bill in 2016 showing my father came in for care the previous month.... 12 years after death. I was bullied to pay this bill by two women working in the billing. " I understand clearly sir your father died in 2004 but you must pay this bill". a bill for service 12 years after his death.
few years ago I found myself in need of the ER. it is a long scary story that you would find hard to believe and I still fear GCH. the entire staff, at the behest of the "Doctor", ganged up on me to humiliate and put me in my place beneath them.
when people at the lowest level of any business are terrible human beings .... you need to understand that it is the attitude of the highest amongst them that gives them the right. I want to be clear, GCH has a code of silence in treating people with less than professional behavior.