My good turned bad

My ex contacted me...yes he contacted me, yelling a screaming about me being overly emotional and how he was going to file harassment charges on me to teach me a lesson.
I can lose my job over something like that and he knows that. I don't know what to do anymore..when I did try to talk to him all I got was verbal abuse and now when I don't contact him he's contacting me yelling that he's gonna teach me a lesson.
The only good thing I guess is my ex fiance' has stepped up to the plate to try and support me how he can. He use to feel the same way that everyone else does now, but he's matured a lot from what I can tell since we broke up. He's there for me when I need a shoulder to cry on and he's said he's pushed his worries to the side when I need him because mine are more serious and can become life threatening where his are just minor money issues