Write a letter of complaint. Follow the rules for a formal letter, and use the full-block style. the complaint may be about anything you wish such as poor building maintenance, or disruptive noises from a nearby business. Please note that a form letter or a template cannot be used in constructing your response. when a form letter or template is used, you are giving little to no thought to wording or formatting, and you are not actually creating your own complaint; you are simply filling in the blanks of someone else’s work.