I think it's kinda weird to expect a source any time someone online shares an anecdote. It was sunny in New York yesterday, do you need a source for that?
At any rate, a 5s Google of "patel hotel indian scam call site:www.reddit.com" reveals dozens of threads of people sharing essentially the same anecdote. Is that enough for you sir, or do you need something peer reviewed?
I too like it when people link to things to back up a statement.
But the way he described the phenomenon made it seem pretty common, and indeed, a quick search for "patel cfo scam hotels" turns up a number of relevant results... Seems like it's a pretty well known, frequently occurring event in the hotel industry.