The only two ways to get an EIN Verification Letter (147C) is to call the IRS at 1-800-829-4933, or to mail the IRS a written request. I certify the provide cost share is accurately represented in this confirmation letter.▫ Individual: Write the individual's first and last name. In this article, we discuss how to write a conformational letter, look at sample templates for formal and informal confirmation letters and share some tips. These samples show will provide you with the proper format to write an email requesting a confirmation Letter on different occasions. Find out why third party verification letters such as, CPA income verification letters, are crucial, and access sample templates for your convenience. A debt validation letter is a written communication that a consumer sends to a debt collector or creditor to request verification and validation of a debt. If you disagree with an individual or a company, and informal efforts to resolve your dispute fail, you should write a demand letter. Anyone seeking advice or assistance to fill out such forms should contact a legal clinic or lawyer. Section 1 — Mortgage Lending Documents.