Topics on this page. General Tips; Example of a Good Demand Letter; Example of a Bad Demand Letter.After you have developed a solid business plan, the next step is to actually register your business with the State of Maryland. Use our Complaint Portal to file your complaint. You may file a Complaint with the Office of the Attorney General's (OAG) Consumer Protection Division. There are three ways to get a Complaint form. Filing a Failure to Pay Rent Case? This class will help you learn how to fill out the form. Watch. Registration Information: To register online, click REGISTER and fill out the needed information. Print your EIN confirmation letter for your records.