I read this wrongly at first and thought the writer had blown $4,000,000 on a single customer complaint. This somehow made me quite happy and I was ready to splurge some words on a well upholstered article about how a single crappy customer can bring down your whole company and why you should really leave people to their own devices. Then I realised I'd got the wrong end of the stick, which is probably why my customer service doesn't tend to make any money for anyone.