File an Online Complaint. Go to USPS website, scroll down to contact, click on 'Email' and then scroll down to 'Personnel' and make the complaint.Select a form from the list below. Select a category to limit the listing to a specific form type. Our Investigation starts with your report. To file a complaint with the Ohio Inspector General's Office, please download or complete and submit this fillable Complaint Form. I have used the VACANT card and form 4232 in the past. Find the best way to get help and connect with USPS. Fill out a short form or get tips to fix some of the most common issues right from your computer. All of the Federal Employees Program's online forms (with the exception of Forms CA-16 and CA-27) are available to print and to manually fill and submit.