Caller I.D. shows SAFE N SOUND IN with the phone number SAFE n SOUND 925-952-8572

calls and hangs up on answering machine...when I call back all I get is a busy signal. Usually calls in the eveing between 5 and 7 p.m.

I received a call from this number also, 9/02/2010, same thing hung up on answering machine then when called back it was busy...????