Called me twice within 5 minutes and leave no message around lunch time.

I didn't answer the call.
No message was left.

Received 2 call today from this number this morning and after one ring, was hung up on each time.  Blocked this caller.

Called twice. I picked up the second time. It said (I think it was a recording) "Hi this is Todd from GE Home Security. Can you hear me ok?" -- I suspected from the way it was done that it was a recording so I waited to see what it would do. It said something else, then in the exact same tone it repeated the greeting. I think it was trying to confirm that I was a human. I was just loading this page and saw that the number had lots of comments, so I stayed silent and hung up.

"You have been selected to win a free trip to the Bahamas."  Sure.