Very realistic sounding robo-call, starting with the telemarketer apologizing for not being on the call right away because she was adjusting her headset, then launching into a vacation offer spiel, and not stopping for air until asking if you'd be willing to give more information if interested. I imagine if one answered yes, you'd probably be transferred to a live person looking to close the deal. If your call starts with the headset-adjustment ploy, just hang up and block the number.