sitemap fix and google index problem - URGENT!!!

We need urgent help with our website. We have many pages indexed from our website by google but yet when you search for "websitename.com" .. it doesn't show up. We can see in our statistics that around 150 visitors come from google though. The only 2 things that we could explain this is 1) our Sitemap is broken - this needs to be fixed 2) We are facing ddos attacks and we blocked a IP which belonged to google which was [login to view URL] Please PM for the website URL and then let us know what you can do for us. This is for an adult website. Thank you