What am saying fruders have taken there fraudulent activities to another level so we all need to be extremely careful and watch full with our daily transactions.
Thanks for sharing OP. Hope say you raise alarm so that hands go touch am small and di brain go reset.
Does your POS machine don't print receipt after someone makes withdrawal?
Most of them no dey use printing paper and I believe di ole go don observe op from a distance, see say him no dey give out printout before him make di move.
Always be careful in your business, there are about 4 other different means they can do this kind of scam to defraud POS agents their capital, if you are not vigilant enough, you could fall victims to any of those four methods.
E for dey nice if you share am here too, so that we all go learn.