Someone called and said nothing, 2x a day sometimes...and I called back and got a "busy" signal.  Does anyone else get this number, too?

Got a call from this number as well.  No answer.  Did not attempt calling back.  Thought it might have been ex-girlfriend.  Not sure now after seeing this post.

got a call from this # too, dial back busy first, connected then with auto dialing tone, damn phone spammer

They've been calling me every day for at least a couple of weeks now. The caller ID says "USC".

hmm, that makes sense that it's usc.  i've been getting those calls lately too - they must be trying to collect donations.  usc:  i am still paying back my loans!  no extra income for donating BACK!  :)