If you've noticed a $1 pending charge on your newly added card and bank with NAB (National Australia Bank), then, unfortunately, this is just a procedural check to confirm that the card is active and valid. 

This $1 pending charge will never process fully, and should be returned to your account within 2-3 business days. 

We are really sorry for the inconvenience!

Important: this $1 is really not a charge, and it will disappear from your statement eventually.