Since when do police officers report to calls like this? My guess is they were told a different story.
Here is what I would do - I would call these PO's commanding officer or maybe even the chief of police. I would plead my case with them also showing his past history of arrests. I would explain that he is an A.
As for his actions this morning - I would file a police report. You have your neighbor as a witness. I would file 500 reports on him. I would file a report every time he sent me a borage of nasty threatening texts - I would let the police know that you fear for your safety. This is abuse and it has happened many times! I would also contact a domestic violence shelter and speak with a specialist there - you may get some very good guidance on how to handle this. I would work my ass off to get protective order against him.
This is what I would do it may not be what you would. He makes me sick.