If you believe you are being cyberbullied it is important to report it. Cyberbullying is a criminal offence. Check out this eSafety Commissioner guide to How to make a cyberbullying complaint?
"Cyber bullying is a criminal offence where the bully can be charged and placed before the court to explain their actions. It involves causing distress and deliberate harm to the victim. This is a very serious criminal offence that may be punishable by a term of imprisonment" (QLD Police, 2019 retrieved from https://www.police.qld.gov.au/safety-and-preventing-crime/r-u-in-control/cyber-bullying).