They called about 10 times in a row (and I mean within a 2 minute span). When I answered, no one was there - I just got a prolonged beep. When I let it go to the answering machine, no message was left, just the beep. I tried calling the number and got a recorded message, "Thanks for calling. If you want to be placed on a do not call list for this number, press 1 now."