Prank Call?

A desperate blackmailer just called me with a hidden number and the following conversation ensuedCaller: am I unto Don Norman Obinna?Me: yes, who am I speaking with and why did you hide your number?Caller: it is not important, just listen attentively, I have a message to deliver to you urgently and you must cooperate within the next seven (7) days or have yourself to blameMe: wow! I am all via IFTTT