My ex talking stage won't leave me alone

I'm seeking advice. I'm at such a loss. Back story: TALKED to this woman for 3 months. Caught on that she wasn't stable. Ended it.

It was "Please talk to me" "Can we please meet up and just talk" And paragraph after paragraph, call after call, emotional out burst after being kind, over and over and over again.

She showed up to my house unannounced then called me and said I was at HER house slashing her tires. I asked if her tires were slashed. "Well...no." Okay. Blocked. Blocked on everything. Social media? Entirely private. Completely shut down.

I started seeing someone else, guess who messages her "warning" her about me? You fuckin guessed it. My ex talking stage. I genuinely have no idea how she found out. Then she shows up to my house AGAIN and leaves a vaguely threatening note. I THEN unblock her, send her a very direct, emotionless text saying I will file for a protection order because this is harrasent at this point.

Within the last week, she called my COWORKER (?!??!??!?!?), talked to my best friend, my ex, and THEN found my email and sent me an email today.

Wtf do I do? Im at such a loss. Im so exhausted with this shit. I couldn't have been more clear that I want nothing to do with her. Im paranoid and exhausted.