Worked as a cashier about 10ish years ago. Never once saw multi card roulette.
Of course once in a while some people would say "20 on this card and 10 in cash." Never seen it with more than one card though. I almost never saw people get declined, I think it happened like 5 times total. It would be highly suspicious to me, especially coming from the same person!
Isn't the merchant liable for the chargebacks? Or in this case, who was footing the bill for this fraud?
Of course if it's that frickin' obvious what's going on then the merchant will find themselves under review and saddled with much higher fees after a while.
[1] http://www.seyfarth.com/dir_docs/publications/NEHT01120810.p...
>As a practical matter, the Court’s decision means that employers can- not safely take deductions for theft or damage to property unless fault and value have been determined by a court of law or government agency.
I wouldn't be surprised if many people in the service industries still see this type of multi card roulette daily.
I can imagine if the clerk did report his concerns, he'd likely be told they were good customers so why rock the boat....