You're an idiot, and this is a waste of time. No, some fight ten years ago is not a bigger issue than a literal crime.

What issue is bigger than harassment? Why are you defending someone who is repeatedly harassing someone else?

Anyone who does this shit is a pathetic loser, without exception. OP does not want this contact. Their father needs to get over himself. If he cared about OP, he wouldn't go against his wishes. The father clearly doesn't give a damn about OP, or he would listen to what OP's actions say.

If you need me to be even more exhaustive in explaining this very simple concept, let me know.

No, I would want my dad to give up on me when I repeatedly fucking blocked him. No is a full response. If that father lacked the ability to listen and accept responses from me, then it would only make my life worse to have continued contact with that person.

There is no reason, absolutely none, that makes it okay to harass someone. That's what this is. Making new accounts to keep bothering someone is harassment, the reason why is irrelevant.

It's concerning you don't see repeated, unwanted contact in spite of clear communication to that effect, as a bad thing.

You don't seem to understand that some issues don't need to be moved past. I would understand your position if the father didn't also prove how little he actually cares about how OP feels, repeatedly, by making new accounts to get around being blocked.

I'm sorry, but if you ever have to make extra accounts to continue contacting someone who blocked you, you're automatically an asshole, and you're only proving that the person who blocked you was 100% correct in doing so.