Most platforms have "Zero Tolerance" policies for hate speech and spam.
Spamming someone with abusive messages or "gaali" is a form of cyberbullying and harassment. If you or someone you know is experiencing this, please know that you are not alone and there are steps you can take to protect yourself. gaali spam message
Implement a "Karma" or "Trust Score" system. Most platforms have "Zero Tolerance" policies for hate