Hello @meshelly and welcome to the forum!
I’m sorry to hear that you’re having a difficult time with your ex. While I don’t know if we have a spell that specific here on Spells8, nor do I have one in my personal grimoire, we do have a few spells that can be tweaked for your situation.
I hope you’ve also taken the mundane routes to help you such as seeking protection orders, restraining orders, and cutting off all contact.
Here are some spells and information that you might find helpful! 
Don’t mind me @jan_TheGreenWitch I’m just going to add those to my own grimoire if that’s okay lol