Normally a triple points deal earn that posts as two transactions has one at base (or Base+status bonus) and the other as 2 x base.
This means 3 x base are posted - c.f. Triple points.
Are you indicating the line named as triple points on posted as 1 x base points?
(My apologies for the delay - I've been super busy.)
What's listed is the following:
Virgin Australia +20 SC
+ 2,370 Pts
Velocity Frequent Flyer Triple Points for flights in & out of OOL +2,370 Pts
Then repeated for the trip back home.
I rang back and was able to get in contact with someone who explained the situation better this time. They told me that the 2,370 Pts is triple because the 2,370 Pts listed under Virgin Australia is the base (5x the amount shown, due to using a Velocity CC) + 100% bonus (due to currently being Platinum). This means that take away the Platinum bonus, 2,370 would be double 1,185 and would be triple in total. So, they were correct, in the end.
Now, I feel silly complaining but thought that it's best to own up to it. I do think that perhaps the Virgin Australia listing should mention that it contains the Platinum bonus.
Never mind. All is good.
(There won't be too many more Platinum bonuses that I'll be receiving as I won't be maintaining that level due to their change.)