Lots of these calls coming from within NJ over the last week. Not one message left. Further, few reports like this site on any of the numbers which leads me to believe they are all "new" numbers.
I will get one call which I don't answer and a very short time later, the phone will ring again from another number. It's almost as if the numbers are working in concert with each other.
So, to whoever this is, please know that this person is blocking each and every number that calls and doesn't leave a message.