VW warranty Issue

[beefan]

I have recently purchased a VW Polo from my local garage brand new, 66 plate, included was one years free insurance anyway the heater has broken, we'll never worked and it going in for a week to be repaired, VW would not insure me on their dealer insurance as I am too young and apparently neither will my insurance (which is through vw!) for a courtesy car? So apparently I'm old enough to buy a car from them but not old enough to be insured should my BRAND NEW car be faulty. Anyone got any suggestions to getting a rocket up the a***s of the dealer because this is unbelievable tbh