I’ve said this on the other MB thread in a Dressage.
The police are in general not effective at intervening and resolving ongoing interpersonal disputes between neighbors, landlord/ tenants, room mates, etc. A lot of effort has been put into improving response to. domestic disputes over the past several decades but even there they get it wrong sometimes, and women or children get killed.
From the police perspective, in this case you are getting increasingly urgent competing calls to 911 and other agencies, claiming mysterioys SUVs, child neglect, online harassment, both parties fear for their lives, threats of guns, etc.
The police are effective at intervening in real crime, like stolen cars, bar brawls, bank robbery, etc where there is an obvious crime committed.
They just don’t have the training or indeed the resources or legal power to do much about interpersonal disputes where both parties are calling 911 constantly, other than hope their presence makes the parties simmer down a bit.
The route you would need to go in this situation is to get a restraining order and eviction order from a judge. Once you have these, the police will enforce them.
If the police turn up and find no weapons or crime or violence in progress, they can’t do anything. After a few calls like that, they may start to feel the parties involved are nuisance complaints. They just don’t have the tools or powers to intervene and give everyone a time out.
And rightly so. The police are not the ones to decide the terms of the tenancy or what was said on FB, on the spot.