Microsoft please help

I'm logging into my admin portal windows live domains

www.domains.live.com

entering my details and logging in but i cant add new user or anything the domain has diapered and i cant re add it it says:

This domain name can't be used with Admin Center because it's already registered with Microsoft. If you own this domain and want assistance please contact support.

I click support and it takes me to a generic page with no contact details.