Pro Se Acknowledgement. Cause Number: I have received, read and understand all of the Pro Se Hearing Guidelines.Address customer complaints professionally with our acknowledgment of customer complaint letter template. Create and download a letter for free! The process of investigation is. Please fill in your name and contact information below to be contacted regarding your feedback. The document is a summons directing Bexar County Judge Nelson Wolff to respond to the complaint within 21 days. An Acknowledgment of Paternity (AOP) is a legal document that allows parents who aren't married to establish legal paternity. After making a complaint an acknowledgement letter will be sent within 5 days. This sample letter has choices to help you build your letter.