Who called from 6605300656

This number has called 5 times in one hour.  After getting answering machine, they wait 10 seconds so it looks like there is a valid message on the machine.

Called me 3 times within half hour on Sunday. 12:45, 1:03, 1:07  Shows up as unavailable.

Keeps calling at all hours, no idea who it is.

Does not matter....block them and be done with it.

Has called over 20 times in 3 days.  No one there but they activate the answer machine. Very annoying