u are doing the cashering work, when the delivery man comes in
with cartons of goods, u c the invoice...signed and paid him the
correct Total+gst amount, u ask him is it ok, he sais okie..then
left the shop..then 3 mins later, he returned.. and said that u
paid him less without the gst amount dat means the total sum
without gst .....how would u react to this?
ps* cos this happen 2 mi not once oredi! 
those pea bastard brain delivery guys....