13 days left deserter debuff

Today i wanted to go battlegrounds but i couln't because i have a 13 days deserter debuff !
And i hav'nt been connected on the game since a month.
pls Help
character : Bwo, Horde, PvP server
And i hav'nt been connected on the game since a month.
pls Help

character : Bwo, Horde, PvP server