I had this issue in the past, the credit card number on the statement was not the one on my card. I actually considered disputing it on this basis but in reality I always knew it was just a mistake. Amazing this is still a problem though, cancelled last card a few years ago!Hmm this is quite unusual.
I whipped out my first bill to grab you the bpay code, it's 6007 btw.
The account number should be your visa's number.
Just noticed my account number's last 2 digits are different than the last 2 digits on my visa card :S
Is this normal?
Edit:
Just logged into the anz online, the account number listed there is my visa's card number, different from the one on the bill.
Time to give ANZ a call i think, before I make payment to someone else's card.