Is this seriously you that happened this to or are you just sharing some random screenshots?

If this is really you, I’d genuinely ask them. Like, why they are doing this to you, where they know you from. This might give you some insight on who they are, where they know your from and their motivations.

If you just block you without interacting, of course they want to continue trying to get responses, but if you understand it, you might get some usable information and see why they act like that.