Multiple calls but no one there or no message left

I didn't answer and they hung up leaving no message.  I suspect a tear-at-your-heart money scam!!!

4 or 5 call from this number every evening, but no message-323-330-1456

A man called for this number asking for my husband, then for 3 nights in a row they called again and last night it was a British lady saying they were a "non-profit" contracted by Red Cross asking for Haiti relief. Would only except a credit card number by phone. We believe it was a scam because nobody would only except a CC by phone. We said we would go to Red Cross website and they said that wasn't what they were looking for.

Msg from this number, caller did not identify himself but just said to call this number.  when he was finished speaking i could hear scattered applause in the background.  I see someone mentioned Mercy Corp above and we did donate at one point to a place by that name.