even I got demo of him I think, if needed I will try to find

So Pendulum, just say that u cheat, be open to admins, say sorry, say that u will change your attitude to game and never again use cheats
and maybe after all that, they will give you chance to play again. If you look on other posts for unban, players ask apology for cheating and they got that, maybe not next day, but still got chance.
Try it, say true, that helps, trust a bit to ppl