Not only did the dealer say they had never heard of the water pump failure issue, VW UK said the same to me on the phone today. I contacted them via Facebook and Twitter to see if I could rush things along a bit cos I'm getting really bored of the 1.2ltr Bluemotion they gave me.
After reading some of the forums around the world it sounds like its only customers who have bought Volkswagens with the dodgy water pump know about the issue, everyone of them was told by the dealer and vw head office 'never heard of that'