We strongly encourage you to file your complaint using our online complaint forms as it is the quickest way for us to receive and process your complaint. To start a case, you must use the Conciliation Court Claim Form.Filling Out the Form. Businesses are prohibited from engaging in trade practices considered deceptive, such as tampering with a car's odometer or selling used goods as new. Resources to help you comply with FTC truth-in-advertising standards, including how to support your claims with solid proof. GBL § 349 prohibits "deceptive acts or practices in the conduct of any business, trade or commerce or in the furnishing of any service. Imagine a railroad that wouldin the absence of all competition (e.g. Marketing practices. The New York City Consumer Protection Law prohibits deceptive trade practices. You can request a guide with information about how to spot false advertising.