submit my yesterday last article chillkey.com three time

Yesterday by mistake I subnet my last post three times on chillkey.com. .
So how to delete and just publish just one post on chillkey.com. I am not found post delete option.now what happened with my account.i am also surprised to see for that my post submit on chillkey.com. I am not see cleared congratulations your post successful subment .just see warning token mismatch. But when on yesterday I found that my last article posted. Three time.whats this.i am not doing this by my wish this is just a technical mistake.
Plus administration chillkey.com delete my two post sampler article.and pls not suspended my account on chillkey.com. I am like chillkey.com and stay with here long as chillkey.com long here.this free jpg image taken by google