Calls multiple times a week, sometimes twice in a row. Never leaves a message (the single voicemail was a couple minutes of silence), and hangs up immediately if I answer. I have no idea who the caller could be and I'm beginning to feel a little stalked. If it's a telemarketer, someone should tell them they're doing it wrong...

Received a call from 415-683-6181, I kept saying hello, the caller did not respond, they hung up.