Blocking other users?

I would love to ‘block’ some users of this app, like I can easily do Facebook for example, but I can not figure out how to block a few bullies who are literally stalking me, harassing me (and others), and generally making my experience on this app as stressful as humanly possible, to the point where I don’t want to visit the app any longer in fear of what may or may not be waiting in my ‘notifications’ for me... I have reported them and contacted the support team on here but they never go away, and they are just getting worse and worse. Please help