Cleaning Up Visitor Messaging?

[CylonsKlingonsDaleksOhMy]

How can I permanently "hard" delete messages on my visitor page? I'm up to 19 pages or something, I'd like to clean it up, but whenever I select messages for deletion, it only gives me "'Soft' delete - Leave "Deleted" Message" as an option... which means I still have 19 pages of crap.

Is there anything I can do short of just disabling Visitor Messaging? Please advise...

[Netkeeper]

Not really sure why it's an issue, but I'm guessing we as users can't "hard" delete because the admin never gave our user group permission to do that.

[Leogeddon]

Some visitor messages I can't even open, it says that we don't have permission to view them. I can't even thank a visitor message because I don't have the rights to reply to a comment on my own profile??