Who called from 3072549348

I had the same thing at my office that Greg B reported, happen just now. I answered the call, no one spoke, I kept saying hello then the line disconnected after about 15 seconds. We have caller ID but only the number appeared.

Just had same number call our office number and say nothing as well.

Same number puzzling silence... called Aug 12, 2013 at 12:23 pm here in Toronto ON Canada

Same number just called our office. Didn't say anything.

Looks like a few people get these. Me too, in Calgary, AB