Tenant Harassment Vs Landlord Harassment

My Tenant took me to Court for Harrasment, she lost, case left open, Now calls me a MF in the Hallways, calls NYPD on me for no reason, they just leave, calls 311 HPD on "No Heat" calls, refuses access for repair, filed rent overcharge on me, The woman, her sister, her Mother all in the same Builg, Rent Stab Mother is 87, they call on no hot water stating its her that calls, mother tells me she doesn't, its a complete mess - I have video proof of them slamming doors on me to make repairs and saying FU...Insanity, HPD has been there 100 times No Violations., its a constant and doesn't stop, Can I sue This /These 2 sisters ? The rest of the Building , 0 complaints , At this point I wont walk in bldg w/o a video camera strapped to my hand !! What To Do ? There's More !