This is what HP says
HubPages will never actually delete your Hubs, they unpublish for violations of TOS, but they are still available to you under your statistics page. All of your Hubs may be unpublished at once if there is a pattern of violations, or if your account is banned.
If you have had warnings and continued to do the same you may be banned.
Are you by any chance writing in languages other than English or transliterating them???