Someone duplicated my model, what should i do

This dude completely copied and duplicated my model 2 days later, I would really care but, it’s like #2 trending! while mine (the original) is not being used by anyone!

What model

Majora mask moon

Your Workshop item appears to be hidden.
Besides, I was able to find this exact model on various 3D model sharing websites with a quick search on Google, so neither of you made the model to begin with.