Attention: Sir/ Madam,

My name is Olayemi Cardoso. I am the current governor of the Central Bank of Nigeria.  
We got a report that you are dealing with some people who impersonate themselves as Central bank of Nigeria officials.  Please we advise that henceforth, you should desist from any further dealings with them.  They are  fraudsters and all the money you have been sending to them  is all a scam.  We therefore want you to send us records of all the payments you have been making to them and you should stop further communications and dealings  with them.  You must not forward this email to them  so that they  will not deceive you further.  
As I write this email to you, they are  on the wanted list.  The EFCC, DSS, INTERPOL AND FBI are on the watch to find them.  So if you continue any further dealings with them , the above mentioned security bodies will  get you involved.  So you should stop further dealings with them.  Any money they  receive from you is purely a scam.
You are therefore advised to forward all your full information to me such as your full names, address, phone and any form of your ID Card.  You should also forward to us all their  information that is at your disposal.
Upon receipt of your full information to us, you will tell us how to receive your fund payment so that we will start the process immediately.
I will also give you a call. Waiting to hear from you.

Yemi Cardoso