Deindex blogs & brings them

I got blogs on blogger & wordpress about my website but my ids got hacked . Now competitor is using it against me by putting in hate speech & spamy things about my website & company . I need to de index those blogs asap. Some of them were deindexed by google while I was reporting them. Other ones are are still there need help to bring them down . They are really kicking me badly . you can do PM asap. .........

What you want actually ? De-Indexing ?
Can you prove the ownership , previous logins screenshot or any other proof as those were your's ?