Why

i was unbanned by somewon then
i got banned

you were never officially unbanned, and you never successfully appealed your first ban. So that is what we call ban evading, and will be punished.

I dident know i was ban evadeing my first ban was blacklist i appled on the ace of spades site and irc
my second i got randomly unbanned

You have never been unbanned. Your IP changed, so the ban no longer affected you.
If you enter any aloha servers, you will be banned on sight.