You ordered web hosting from us but your domain name still goes to the previous location.
Your registrar still has the old DNS (name server) information
on file for your domain name. Did you modify the record with
them? See our
Domain name registrars - domain name registration
page for information.
Your registrar has the right information but the change has not yet propagated. It takes anywhere from 1-4 days for a change in domain registration to propagate to all Internet Service Provider in the world. Has it been 72 hours since the change?