Called rejected by pbx

Every time I try to call a DID I bought from Vitelity I get a busy signal. When I look at the log the message below is there. I have looked in extensions.conf, sip.conf, and providers.conf with no luck finding anywhere the did number is in an exten field. I have a different DID I got from another provider and have no problem calling in on it. Any ideas?

Call from ‘username’ to extension ‘inbounddid’ rejected because extension not found.

Show us the peer configuration and sip debug messages showing incoming INVITE message.