I once had a landlord in Detroit who stopped paying his HOA dues In a large complex. I had a court order to pay my rent to the HOA and he was not happy about that. He threatened to evict me (not legal), but then his ex girlfriend got involved. His ex girlfriend was a well known real estate agent with a popular house flipping tv show on national television. She threatened to blacklist me with every major landlord in the city and then only got more aggressive. I looked up the realtors code of conduct, wrote a 10 page complaint to the licensing board with cited evidence, and emailed them a draft with the note “all I want to do is continue to pay my rent and legally occupy this unit. I don’t want to fight, but if we can’t resolve this I will submit it tomorrow.” His girlfriend went away and suddenly I had no problems (and apparently he paid his over due HOA dues). I never mailed the complaint, but I did move out within a few months.
You should have sent the complaint anyway; all this does is enable them to continue abusing others. Make a paper trail, tarnish their perfect record, let others know the truth.