Swearing will have the opposite result of that which you want.
To get permanently banned, your friend must have done something wrong, because there are 2 bans prior to a permanent. So, to get banned 3 times he must have been hacking. Now that the account is banned, the only thing you can do is appeal and wait for a staff member to see the appeal. Until then, try a different server where your buddy has n
but i just do a appel now im waiting but is ridicoloues ;(