Is my ex trying to get my attention?

I went through a breakup around 4 months ago and blocked that person out of my life in every way possible. My ex got two of their friends to call me the other day asking if they could ask a question, which I responded no and ended the call and blocked both numbers. Beforehand, they were posting pictures of themselves on one of their friends snapchat story, who I kept on snapchat as we were civil. I have deleted this person now, as I don’t want any contact with my ex. As well as this, my ex confronted a friend of mine a few days after these incidents, arguing with her about me and threatening to fight her. I’m very confused, and I’d like to hear someone’s opinions on what you think is going on. If this helps, this relationship was very toxic and I’m happy that I’ve escaped it. It ended very bitterly as I was cheated on. I’d just like to know what people think about the situation.