I’ve had the opposite experience. HBD is all over my landlord due to 311 calls. We’ve had so many wars over heat & then they finally pinched him right as the boiler completely broke. They whopped him with 10 violations between two apartments who didn’t call anonymously. I wonder if there are lazy inspectors assigned to your neighborhood. Ours show to every call that’s not anonymous (but not same day) & know they will have access. Usually they’ll call, and show the next day.