Semi-related, it's hard to imagine being defrauded out of cremation remains, but it's apparently quite likely to happen during pet cremations (due to the cost to run the machines, multiple smaller pets are processed at the same time and you won't necessarily get back what you sent).
This Freakonomics episode goes into more detail: http://freakonomics.com/2013/10/14/the-troubled-cremation-of...