Episode #3.2 - S3-E2
Other mistake: Camille shows Humph some bank statements. Susie's is unreadable at normal speed, while you can tell that Carl Collins' is a January 2014 statement, and Arnold Finch's is a March 2013 one, not quite comparable nor really making sense being so outdated. His totals don't add up at all, either, supposedly being on the brink of financial ruin but with 12,000 in the account after a positive of 4,000, an in payment of 1,200 and a long series of withdrawals and payments. (00:34:00)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.