Lol umm ok ill have a go but its just some guessing...
-savings did not increase substantially enough to divert borrowings from overseas back to Australia
-the current loans abroad still have to be repaid, thus the interest on those loans abroad are still adding to the current account deficit
-While the level of credit in australia may have increased, the interest rates offered by financial institutions may represent a poor offer compared to overseas lenders.
-there are other components of the current account that may have increased. Eg. Imports relative to exports may have increased, canceling out any possible reduction in the cad.
im not sure if all of these are real reasons... they are just off the top of my head, hopefully at least one is right lol