That's f-ing ridiculous. I would be taking the van to a sensible independent workshop (ie proper mechanics not parts-fitter monkeys) and asking them to find a suitable length of piping to cut and fit.
Good grief how hard can it be? I bet it's just some flexible fuel-type hose and a couple of jubilee clips.
(You could always then have a genuine VW part re-fitted when it becomes available, although if it was me I don't think I'd bother, life's too short.)
[EDIT] Is it this bit? There you go.
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