Sportingbet Top Tote +, not a bad product but,

I copped some free bets last week so had a go at a few outsiders today placed one bet of $10EW DR Barnard 3rd $4.30c

Ok so it's free bet so you don't get the stake back (fair) so you would think that I should get $30.30 right?............. wrong I got $23.30c . Yes they deduct the losing win bet as well can you believe that? in other words if I'd placed 2 separate bets @ $10 each i.e. 10 win + 10 place I would get $30.30c return, madness!