Today I gave the bike a good look over.
Ive found a few more rust spots, so considering that the bike is brand new and never been left in the rain, Im pretty sure that it wasnt treated particualy well before it got to me.
So.....Im going to try a get a full refund from the shop.
If I have no joy there I will contact Giant and see what they can do about it.
If and when I manage to get my cash back, I shall probably be back here asking some advice about which bike to get.
To tell the truth Ive lost confidence in the Giant brand, although they seemed like good value at the time, I want to pay a bit more money and go for a different company.