Albeit 54months ago now, VW UK fobbed me off with a similar explanation. I wasn't impressed with their response and sent a letter of complaint, along with the letter sent to US customers in the link below, and awaited their response.
They initially said that the UK/European market wasn't comparable to the US but eventually relented and, along with the dealers contribution, gave 60% 'Good will' towards the cost of replacement. As I was due a DSG service anyway, my contribution which totalled circa. £385 meant it it was a fairly reasonable result.
You could try a similar approach with the letters and make a strong emphasis on your 'Brand Loyalty'...etc.
Good luck
http://www.myturbodiesel.com/images/pdf/VW-DSG-recall-warranty-extension.pdf