Hey Pandas, I Need Your Help

I've only had an account here for a bit and I love being able to comment on things, but there's one person (I'm not gonna day their username for their provacy) who keeps adding to most of my posts and it's sort of scaring me because they're a transphobe and very extreme rightist. I feel like I'm being chased and attacked, and they're trying to tell people that I'm stalking them (believe me if I could never interact with them I could but I don't know if this site has a block feature) and now I'm worried that I'm going to get banned because they're victimizing themself. I've tried to get them to calm down and offered that we both just ignore eachother's existence till the end of time because we obviously don't like eachother, but they're still replying to my comments and posts and it's scaring me. Should I delete my account? I really love being able to interact here, but I can't deal with this. If there's a way to block someone please tell me, that would clear everything up.