Someone trying to find me through a Google Voice Number, what can they do?

To sum it up, this guy was social engineering kids and putting gay porn malware on their computers to "troll" them, someone leaked his phone number so I decided to call him through Google Voice to confront him, he now wants to use that info to doxx me and my family members. Can he do anything? Keep in mind he's a little script kiddie "hacker"

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