Nani Sumarni almost dropped her tray of cakes and biscuits when the cashier at the Indomaret store in the Wisma Indocement building rejected her Rp100,000 banknote.

She looked at the bill and asked the cashier: "Is this money fake?" The cashier replied: "No." Sumarni was dumbstruck. "If it is genuine, then why do you reject it?" she demanded. Taking a glance at a list lying on her table, the cashier replied: "I'm just doing what our head office has