Some woman in a call center that sounded Indian. She said she was from some diabetic research place or something along those lines and then asked if anyone in the household was diabetic. When I said no, she never responded, yet the line stayed active for another 30 seconds...this was the fourth time before 2:30 they had called, so i finally answered.
I have been called up a number of times - latest again this morning. As I live in Norway and do not know any in the US who would call me at 4 am local US time, I did not answer this time either. I too wonder how the caller(s) picks up foreign numbers?