You seem to be doing the right things. I hope VW sort it out for you.
My 140bhp gt tdi sport has done 83K on 08 plate without missing a beat, had 42K when i bought it oct11. But i dread seeing that DPF light come on. Would be interesting to know what miles others have got out of original DPF?
I have never replaced a clutch in any of my cars, last MK4 had 205,000 when i sold it. Surely once in top gear crusing, there is no clutch wear, but then never had DMF before either......