"number was "disconnected."" means the number is spoofed https://en.wikipedia.org/wiki/Caller_ID_spoofing and your caller should be treated as hostile.
The caller, 661-242-7282, called us @14:11, 02/07/2013. We were out. I returned the call 20:52, 02/09/2012. " You have dialed the not working number.".
The caller called us again @11.02,02/11/2013, I just returned home. I returned the call by clicking on : talk. Message" You have reached the number not in services: It called us daily in last 4 days.