If it's new then send it back

and get your money back!!
In the mean time.........
Go to Tesco's and get a "Melody" soft floor brush for about £4
and go to your local Aquatic shop and get:
1 mtr of 4mm air tube
2 x straight pushfit joiners
1 x T joiner
I trust you have some 6mm id 10mm od pole tube?
Also go to your local Plumbers suppliers and get a 10mm Gas valve
Go to your local Auto Extras shop and get 4 x 6mm id barbed tube joiners for Vauxhall fuel tubes?
Now..........
With a pair of pliers, pull out a few bristles from the brush head to make way for the jets.
Then, from the back of the brush head, drill 2 x 4mm holes for the jets.
Now cut 2 small pieces of the 4mm air hose (enough to just cover one end of each of the 4mm joiners) and push them onto one end of each of the joiners. This makes you pencil fets.
Then cut 3 x 5 inch lengths of the 4mm tube. Push two peices onto the other end of the 4mm joiners and thread each piece from the bristle side through each hole in the brush. You may have to squeeze them tight in. Then atatch the T piece and the 3rd piece of 4mm tube...........One Jetted Brush

Oh SOD it..................Ring me on 07815 106363...........It will be easier to explain it over the phone.
Here's a picture of my DS brush