You mistakenly released the coin but later you noticed that the money remain 1000 naira? Or you know but you just let it be like that as you think it is little amount of money?
I looked at it the credit notification and saw that it was missing 1000. I deliberately clicked on release coin because that day I was in a hurry. The trader was lucky that was a good day for me. Next time, I will not let it slide.