By Ryan Fahey The man responsible for a shambolic “Willy Wonka experience” in Glasgow has been unmasked as a repeat offender who also left parents raging when he cancelled a Santa’s Grotto event. Self-hailed author Billy Coull, who relied on artificial intelligence to self-publish 17 novels on Amazon in 2023, is listed as the director of the House of Illuminati. His company promises to “transform” humdrum locations, turning them into “immersive environments” which “transport guests into a realm of wonder”. On Saturday, the event was so far-off of what was promised that enraged parents called t…