Sam,
That is a line Navy careers sometimes take, so that they can try and get you in a Warfare Officer's. Keep pushing them and tell them you want to be a pilot. The requirement for Navy aircrew is going up this year, so it is definetely worth pushing for.
By the way don't belive them if they tell you that you can join up as a Warfare Officer and transfer to pilot later. It does happen but it is extremely difficult to get.
How do I know all this? I used to be an ACLO.
If you have any questions, feel free to PM me.
Regards,
Jucky