The website Business Insider ran an article titled "7 Brutally Honest Job Rejection Letters." Here are two examples of how not to confront someone.

Sub Pop, an independent record label in Seattle, sent the following rejection letter:

Dear Loser, Thank you for sending your demo materials to Sun Pop for consideration. Presently, your demo package is one of a massive quantity of material we receive everyday at Sub Pop World Headquarters. [Your material] is on its way through the great lower intestines that is the talent acquisitions process. We appreciate your interest and wish the best in your pursuit. Kind regards. P.S. This letter is known as a "rejection letter."

New Delta Review, a literary magazine in Baton Rouge, sent the following rejection letter:

Thank you for submitting. Unfortunately, the work you sent is quite terrible. Please forgive the form rejection, but it would take too much of my time to tell you exactly how terrible it was. So again, sorry for the form letter.