You have had a problem simular to mine. It all stems from the fact that NCH are so keen to take your money they provide no opportunity for you to review your purchase and personal details before they take you money.
In my case I didn't notice that THEY had already preselected an item for purchase that I didn't require, cost £100 ish, so I have paid for something I didn't require or choose. I have emailed twice and not even had the courtsey of a reply.
I wouldn't reccommend doing business with these people and I think our chance of getting a reply are slim.
Peter