McKinsey came into my company with a new, foreign CEO. They wrote some report that (obviously) agreed with what the CEO was planning to do. Then it turned out

McKinsey came into my company with a new, foreign CEO. They wrote some report that (obviously) agreed with what the CEO was planning to do. Then it turned out all their numbers about Churn, employee engagement, profit, revenue. All turned out wrong. Quarter after quarter all their prediction are turning out to be complete bullshit, even though there was no economic downturn or any big change that happened. They left with millions in fees, taking no credit or blame. The CEO left as well. The rest of the company is trying to fix their mess.