Received two calls about an hour apart from this number.  An automated message began trying to hustle ADT Home Security.  When I pressed "1" to speak with a rep and inform him I was on the do not call list, he claimed it was an automated system, would remove me, and hung up.

Caller ID did not show ADT, it showed "Medford MA".

Received two calls exactly an hour apart, missed answering the phone and no message was left.

Same thing just happened to me today...

Same thing pretty much... Received call about 2 hours apart I missed both calls and got no message.

I get to the point anymore that I don't even bother trying to answer calls I am not expecting. If it's important, they'll leave me a message.