DDoS recovery for my Zencart Site

I have a small website running on Zencart that apparently suffered a DDoS attack 3 days ago and the website is still down. Now my clients can't visit the site, I've contacted Hostgator (I have a shared server account there) and I've been told I have "web bots crawling my site at unmanaged speeds"... I tried to set longer crawl delays and installed the CloudFlare but the website is still down... Any ideas how to bring the website up and running again?