When my young DD was dangerously stalked by an anon highschool mate, online & then at school & other places that she was tracked by the sicko who even left sick DNA evidence in her locker at school, that at first the law chose to ignore, I literally hounded the gates of hell without relent & got that sicko tracked down, stopped, and prosecuted to the fullest extent of the law. Cooled that person's jets, big time. I believe God gave us sound minds to know how to protect ourselves as needed.
Believe it or not there were a couple of other girls also being cyber stalked and pestered at school in that manner but their parents did nothing on their behalf (I was flabbergasted at that) until I contacted the parents and talked with them, which seemed to give them the courage to speak up for their kids and seek prosecution.
If need be, write a letter to your parents explaining your feelings and provide them with stats and facts of cyber bullying that carries over to in-person, so maybe it opens their eyes to what you are going through. Parents that come to realize the facts will not blow it off. If your parents won't hear you please keep telling other adults from pastors to school admin like a broken record until someone does hear you and in turn reasons with your parents, and takes action on your behalf.
Bullying is not the same as it was years ago, even a few years ago, so many parents do not understand the mentality and dangers involved with bullying these days and its style in this day and age, and how easily it can progress to cruel pack mentality at school and the personal cruelty and dangers it can involve.
We have K-12 public schooling (online at home) here that is totally free. Maybe there's something like that in your area? It has been a life saver to many kids and is nothing unusual in these days. Most parents will be agreeable once they understand the damage and/or potential damage being done to their kids otherwise.
I can't even begin to tell you how very sorry I am that you're going through this. There are people that understand this modern-day cruelty and can help you. Please do not stop speaking up loudly and clearly to anyone that will listen until someboby steps in on your behalf.