I've decided that I'm going to trash the company that manages the property.
What is your reasoning for wanting to speak of them negatively?
They are incompetent and they don't deal with problems.
It's well within your rights to leave negative reviews of company who provide poor service. So long as you're being truthful then such reviews can be helpful for others and let them avoid bad experiences in the future.
Nobody at the the company gives a shit.
Leaving an honest negative review will prevent others from being taken advantage of. It's good that you don't people to have to deal with what you have in regard to this company and their lack of concern.