There was one guy who was obsessed with me and I rejected him and now he is abusing me and making shittytalk behind of me, what should I do im afraid?

This guy was obsessed with me and I rejected and blocked him. I never had any conversations with him plus he is 10 years than me. And after I rejected him he started to abuse me through Messages etc, and I told him if he continues I will report his messages. Now he uses his creepy friends to reach me and I have heard his friends shared some random nudes and tell people they are belong to me although I swear I haven't shared anything with anyone else... I don't even have social media and I feel so bad and terrified. What should I do?

There was one guy who was obsessed with me and I rejected him and now he is abusing me and making shittytalk behind of me, what should I do im afraid?
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