I hit reply, responding to DL with an e-mail right away - huffy huffy puffy, well.

Dear Sir/Mdm,

This is completely unacceptable. You sent me someone's confirmation e-mail, complete with payment and itin information - this is a security lapse that cannot be tolerated.

I have contacted Dr Prob** about the situation, and I am certain that he would share my sentiments about sending someone else's itin. to another stranger for no reason. I would like to also check if my account has been compromised. Please kindly advise and address this situation as soon as possible.

Faithfully Yours,

currentjer