Caller: Someone asking for Mark

Asked for Mark - no surname. But before they spoke to me there was the distinct sound of a call centre in the background. Not sure why they would ask for someone else, but told them I didn't know a Mark, and not to ring again. Will wait and see, but I won't hold my breath.

Tried to phone back and a machine voice says to leave a message and push the pound key. Then it says that the mail box is full before you get to leave a message.