About 415-906-2023 ... When they use the computer-based VOIP to call you, you can't talk back to them until they stop talking--they can't hear you. So you can't really "interrupt" them. I've tried-- I say their line along with them as they're talking, and when they stop, then they can hear me making fun of them, and they become confused because they didn't know I was talking--they thought I was just listening. I told the woman she needed to get a new line-- I've already heard that one too many times. She said "I'm sorry!" But then she tried to keep talking again anyway (tough girl--must have been insulted a lot already!)... so I hung up.