I'll keep this short and....
I don't for a minute think that they are maintenance free. No issue there. In fact I have been making enquiries about getting it changed on back of this whole story.
My issue is simply that we were / are being misled.
Either initially with the 120k claim or now. Given the length of time VW have been making cars, I'm sure they have a pretty good idea of what a reasonable period is for changing a cambelt. I'm sure its not 120k miles but on the other hand I think 4 years is a 'little' bit early. 60k / 5 years is IMO about right. So certainly the situation has improved.
I didn't make this clear perhaps but I have spoken to VW UK who confirmed that it was a decision taken independantly by VW UK. Previously I invited you to call them - this was so you would have independant verification of this.