i phoned in this morning, they couldnt refund the £50 but said I could return my current 32GB for a refund and buy a new one at the lower price. just been in store (birmingham pallasades) and done that. Stupid way of doing business, even the guy in store though so but he couldn't override what the online people said.
Will call again and hopefully get a different person who gives me that option this time.