The Deceptive Trade Practices Act. The Act gives consumers a way to sue sellers for false, misleading and deceptive business practices.Sec. 17.46. DECEPTIVE TRADE PRACTICES UNLAWFUL. File Your Complaint Online​​ For complaints about false, misleading, or deceptive business practices. To schedule an appointment, call (713) 909-7323 or fill out an online form. To set up a case consultation with a lawyer at our Houston law office, please call (713) 589-7249 or fill out our online form. The DTPA prohibits certain acts or practices "in the conduct of any trade or commerce. " This is a very broad provision. To file a lawsuit for false advertising, it is recommended that you consult with an experienced attorney who can guide you through the process. This guide provides an overview of important Texas and federal laws designed to protect consumers from deceptive trade practices.