Getting given a system someone else worked on, spending days understanding the system, to identify that at the present rate it'll start to fail inside of a few

Getting given a system someone else worked on, spending days understanding the system, to identify that at the present rate it'll start to fail inside of a few months, escalating that, being ignored, then seeing the system begin to fail as expected. It's like watching a train wreck in slow motion, except I am in the train.