Vat charged by eBay on items from UK, but I have a Vat number ans is charged by the Danish customs

[vagnjensen]

2 items bought and on top of the £400 purchase price, Vat of £117,42 and duties of £16,48 is added.
Normally when you have a Vat/Eori number, you don't pay duties at checkout, but at the import.
I didn't notice it at checkout, otherwise I wouldn't have bought it.
I haven't contacted the seller, as I can't see he can do anything about it.
Searched for a way to contact eBay directly, but failed.
Cheers Tommy