If not surprised to read Bitcoin ATM has been used to scam people, in this space, I believe nothing is impossible and people with questionable characters will always look for a way to dupe innocent people. My friend once used bitcoin as a means of payment in a shopping mall in one of the states in Nigeria and have had to wait for over 1 hour after payment for the acknowledgement, from his end, the transaction was successful but the sales rep was claiming not to have been credited, it took extra confrontation for them to agree to the payment.