I can sympathize with OP. I'm on day 74 (?) of trying to get a refund from Wiggle with no end in sight. They are the most incompetent company I have ever dealt with, bar none.
The UK retailers are fine if you have no problems.
Once you have a problem, probably with rare exception like that guy posted above with the mangled wheels, they quickly become a nightmare - google Wiggle return reviews, they are a disaster. These UK retailers are all the same.