Something similarly hilarious happened to me. I sold an app I built to a company in the 6 figures. I was the sole developer on the app. The sale had already gone through and they (obviously) needed someone to help maintain the app. Rather than just offer me a job, they insisted I go in for a technical interview with their engineering manager -- after buying the app I had built 100% myself. That and a few other clues scared me away and I ended up working for a competitor which went on to become much much more successful.
