fascinating

but why are you getting involved in the customs charges your buyers are being charged?

customs payments have NOTHING to do with the seller, they are paid by the importer (the buyer)

so I assume you are being ignored by the UK customs staff because it has absolutely nothing to do with you!

but what any of this has to do with ebay is beyond me,

UK customs has nothing to do with ebay either unless the seller is using the GSP WHERE THE BUYER IS CHARGED AT CHECKOUT AND AS LONG AS THE SELLER PUTS THE CORRECT CODE NUMBERS ON THE PACKAGE THE BUYER WON'T BE CHARGED ANY EXTRA