According to the lawsuit that Uber filed in a California court on Monday, the company instructed its mobile advertising agency Fetch to remove all of its promotions on Breitbart, but the ads continued to be displayed. In digital advertising, companies often rely on an agency to handle the distribution of ads, and a third-party is used to verify the agency's transparency reports. In Uber's case, it used a third-party called Tune. Uber claims that in transparency reports, one of the publishers that Fetch contracted reported ads placed on Breitbart as coming from other destinations with names like "Magic_Puzzles" and "Snooker_Champion."