could be that visa/mastercard could be blocking the payment seeing as im guessing thats type of card u using from bank so if it is depending on what type of card it is u might need to contact visa or mastercard and get it fixed.

http://www.visa.com.au/index.shtml
http://www.mastercard.com.au/

make sure u change the site to location your in via the drop downbox. then contact them to get it fixed.