COOL: This App Automatically Cancels and Sues Robocallers. “Robo Revenge combines both features to automatically add you to the Do Not Call Registry, generate a virtual DoNotPay burner credit card to provide scammers when they illegally call you anyways, use the transaction information to get the scammer’s contact information, then walk you through how to sue them for as much as $3,000 per call under the Telephone Consumer Protection Act (TCPA), a law already on the books meant to protect consumers from calls that violate the Do Not Call Registry. The app also streamlines the litigation paperwork by automatically generating demand letters and court filing documents.”