This one is very odd.  It's an older woman calling about a life insurance policy.  I didn't answer the phone, suspecting it was yet another telemarketer.  She left a message saying she was with Monumental Life Insurance or something like that.  I called her back just out of curiosity and she answered the phone "Hello?" as if the number was residential or something.  I asked her about the life insurance call I'd received and she quickly made some excuse to hang up the phone.  Very fishy indeed.  I can't find the number through google and it's not listed here so it seems quite mysterious.