Downloadable forms for eFiling, Divorces, and Suites Affecting the Parent-Child Relationship, Child Support, Hail Claims, Legal, LegalEase, and Passports. The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes.(Personalized Seal). How do you fill out an acknowledgment letter? It is very important that you complete this form, have it notarized, and return it to our office, even if no direct payments were received.