Ban appeal:FolX15_PT

So 3 days ago i got banned from your PR server for calling Talibans "SandNiggers" in the all-chat ,first of all i want to say that im sorry ,im from Portugal and for me "Nigger" is just a simple word that and here we say it like in a joke ,I would like to know if this ban is going to disappear or its forever and how can i try to redeem myself