Ex Landlord Is Accusing Me Of “poaching” His Tenants To Come To My New Building

I do not own the building - I am simply a tenant. I was renting a salon suite for 4 years and a new one opened 5 minutes away. I paid out the remainder of my lease, did not ask for my security deposit back in an attempt to be agreeable, and peacefully moved out on good terms. 2 months later, 7 more girls have left and one is considering leaving. I sent her a video of a room near me that is available after she asked me to do so. She also toured the building with the landlord and when I saw her, I said I hoped she moved in so we could work closely again. Now my old landlord is harassing me, calling and texting me accusing me of being the reason everyone is leaving. He has been accusatory and is definitely trying to intimidate me. Truthfully the rent in the new location is half the price he is charging. I do believe people have possibly used me leaving/ the new building as leverage to try to negotiate lower rent with him however he has not agreed to lower his prices. Although other than this one person who I am friends with, I have not encouraged other girls to leave in any way. Should I call my attorney, or is he just trying to scare me?