Perma ban on PSN, can I remove this?

I have been very toxic to other players in the past. However, I have improved significantly since my 1 month ban in August and used the hardest words "stupid" and "poor" to describe either an argument or a way of playing. Now I had a discussion with a player in which I used those exact words because he was glitching. He had written to me and insulted me repeatedly. On Sunday the news disappeared, on Mondays at 7:00 am the perm-ban came. In my opinion completely unjustified. Now I have the question whether I can still undo that?

No, you can't undo, that's why it's called perma.