One of my QA page has been attacked with spam comments. Spammer seems to be an automatic bot. It has bombarded my page with 4193 link comments and every single comment is from different ip addresses. The problem is I am not able to delete this page. This page opens normally when I am not logged in with admin id. But after logging in, when I try to access this page, it shows me 404 page not found.
Kindly suggest me a way to clean this page.