i wa unfairly banned

good evening .. first of all, I am a maplestory player who plays often daily ... and I support the page a lot by voting ... Well, I will explain my situation and I hope I will be taken care of immediately ... Yesterday a player told me I ban with an unfair reason, alluding that I stole from him in mapowner when "both" we did not have it, since we had arrived at the channel at the same time looking for the "king sage cat" since minutes before we were changing channels both ... looking for him .. well the question is that we both got to a channel and it just appeared in boss cat and yes .. he was the one who gave the first blow ... but friends .. the mapowner was nobody's and well .. I also attacked and I killed the boss faster .. I think that bothered him and I report back ... I don't know if that is too much to ban a player ... since it seems too unfair to me .. it's 7 days of ban which I don't think ..only for someone who did not know how to lose ... thank you very much I hope to be attended immediately .. since I miss playing maple