Broke up with cheating ex now using “army” to harrass me

About 2 months ago my(26M) ex (27f) broke up on decent terms, we knew our growth went seperate ways, the next day she was getting rides home from a friend and inviting them over,

this friend of hers also dated the ex before that, this guy has been chasing me around for 7 years getting my girlfriends, i thought we were going to get married.

anyways i tell her it’s time to move out, so she found out who my ex was through mutual boyfriend. she went out of her way to harrassment my landlords for weeks using knowledge gained from my ex. this army has been making false claims of actions i’ve done, landlords are tired of it and have told me to move out too now.

in the meantime my ex hasn’t given my keys back and has been sending over guys to threaten my life and physically push me around, destroy my exterior of my home when i’m at work, and because they have the keys have been stealing regularly.

this has been ongoing for 7 years now of harrassment and whenever i say anything i’m told to grow and and be a man or get medicated.