Called me twice, no voicemail left.

Calls 2-4 times a day leaving no message.

Got a call. Answered immediately. No one was on the other end.

Electric Switch.
They were 'kind' enough to leave a recorded message.
Not trusting them or any of the other electric switch telemarketers.

This number called me twice today, at 4:08pm est and 7:09pm est.  The first time I answered then I heard them hang up.  The second time I missed the call and there was no voice mail.  I called the number back there was just a repetitive message telling you to press 1 to be placed on a Do Not Call list, so I did....