to the club
try and diagnose where the sound is coming from ie the rear of front. Use someone to satnd outside as you drive past and get them also to hang out of the window while driving slowly
are you in the RAC or the AA. I would be asking for their legal department for advice on this. Also try something like watchdog in autoexpress magazine
the bolts on mine were knackered. TDI north had hell of a time getting them off and ending up heating them up to shift them, so you might need blow torch adding to your list