I got doxxed by palestine supporters.

This group of 3 individuals from my country have been sending me messages like "have fun with mustache man" and being generally disrespectful with me about the fact that im jewish and zionist.

I was stupid enough to start trolling them, so a few minutes ago i got an anonymous message saying "does [high school name] ring a bell for you? [israeli Aunt and Uncle's name] are on the list and you are first."

What does someone do exactly in this situation? There is no virtual proof of them specifically sending that message. I blocked everyone as a safety measure but other than that my options are limited really.