@CathyW
Reckon you will find that AGL has done the right thing.
Check your billing did you get the equivalent of $12.50 reduction in every 90 day billing period.
As to getting $18.19 that is the same as getting $20 less the GST.
(GST is added at 10% at the end of the bill)
So $20 * 0.909090909 is $18.19 so similarly $18.19 *10% is $1.81.
Therefore $18.19 plus $1.81 is equal to $20.00.
This is very basic maths and easily explained in Financial Calculations.
You can trust me, I got 100% in my INTRODUCTION TO ACCOUNTING SIX WEEK COURSE at TAFE back in 1993.
Good luck in your endeavours.
Neil
Cheers Neil
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