Not likely. You’re not liable for someone else’s debts.
After my father passed away, I had to get the hospital’s billing department to stop sending me bills for treatment he received while he was alive. I managed to get his account closed.
We are all responsible for paying our own debts but they don’t pass to one’s heirs.
They do pass on to the estate, if any.
Not to heirs but to the estate yes. An executor is charged with paying the bills. If there is nothing left, then yes, it’s an uncollectable debt, but only after the estate is exhausted.
But don’t issues such as hospital bills, or any debts, pass on to the estate of the deceased? I understand you personally were not liable, and you got the hospital to stop sending you bills. But did your father have an estate? And if so, did they bill the estate?