submit my yesterday last article  three time

submit my yesterday last article three time

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Yesterday by mistake I subnet my last post three times on .
So how to delete and just publish just one post on I am not found post delete what happened with my account.i am also surprised to see for that my post submit on 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 delete my two post sampler article.and pls not suspended my account on I am like and stay with here long as long here.this free jpg image taken by google