Gyokuyoutama

Had someone e-mail me several times over the course of the week saying I had sent him the wrong file.  At first I assumed I did and resent it.  But then he said that I sent him the wrong file again. 

I double and triple checked, and it was the right file and so I sent a long e-mail explaining to him what the purpose of the file was and how I know he has the right file.  He responds almost immediately "No, it's the wrong file again!" 

Then a few minutes later he sends an e-mail saying "Nevermind, it's the right file.  I didn't read it before so I didn't realize it had the right information."