Can someone please tell me why I am not getting the correct parcel rate amount for this item

The shipping weight etc I have is as follows:



Please note: the weight is correct grams.
I am unsure of the dimensions for what a 3kg satchel should be etc...

The shopping cart will show the following:



I should be getting $16.85 BEFORE the handling amount.
It doesn't show up as $22 for Express Post when I had that option set in Admin either.

I hope someone can help me ASAP please.
Kind Regards Casey