weird call. called three time, I answered three time. No sound, no voice..

hi

I didn't answer, but when I called back it said WCA & that they would call me back.  I pressed option "1" to opt out & it asked if I was sure, saying that their "Loyal Subscribers" are entered to win a $100 prize give away per day & iPods, etc.  Clearly a spam caller.

I agree, clearly a spam - I happened to answer the phone and quickly hung up when I realized it was a computer canned message from some company called WCA

I've been getting weekly calls from this number as well. When I answer, no one says anything. Yes, it must be a spam.