Recover site from DDoS attack

I need a professional team to recover a site from DDOS attack and prevent from further attacks. Site is currently hosted on Linux Shared Web Hosting from [login to view URL] with shared IP. Account is currently suspended as hosting doesn't prevent such attacks. We don't know what kind of DDOS attack the site is facing. We were just informed by hosting that site is under a DDOS attack that is why the account is suspended. If this works well i'll hire you permanently to prevent DDOS attacks on my clients account.