Nomorobo and the Jolly Rogers Telephone Co have teamed up to torture telemarketers. Using an army of chatbots that pretend to be Santa or other merry makers, telemarketeters are kept on the phone as long as they can so they are unable to call other victims. You can listen to more calls on their Do Not call Christmas site. The Jolly Roger Telephone Co. uses a specifically designed santa-bot to keep them on the line, like an annoyed hostage.
Source: https://www.bleepingcomputer.com/news/security/chatbots-unleashed-on-unwanted-robocallers-and-hilarity-ensues/