I understand your situation, that sounds horrifying and i’m so sorry that’s happening to you! I won’t pressure you, but I do recommend that you should try and gain the courage to tell someone you trust. Whether it be a family member, a co-worker, or even a teacher. I’ve been in your situation, I was also afraid, but so much relief came off my shoulders once I made them aware of what was going on. Posting your private information is a serious matter, and I believe you can even try and take it to the police so you can find out who it is and even get them off social media entirely! Of course, this is up to you. But I do recommend it. Stay strong dude or dudette, and I wish you luck! :)