How lack of testing can mess up things

BOB (Bank of Baroda) recently started new GUI for their ATM.
When you try to withdraw money, you get two options after giving amount. The options are "Correct" and "Incorrect".
If you click on correct, you won't get anything. But if you click on incorrwect, the cash comes out of machine...
Now that's what i call as Lack of proper testing.... :)