Hi
@adey56 - sorry to hear you have a kangaroo problem.
I wouldn't expect VW to refuse to check your car and apply any outstanding software updates that relate to the kangaroo issue and do so free of charge. They publicly accepted (see Honest John) that there was a problem with the 1.5 tsi engine, but it only affected some cars. We never found out if VW actually knew which specific cars (ie VINs) were likely to have the issue and there was no recall.
If you bought your car from a VW dealer, then I suggest you start by having a word with their sales manager and the service manager and if that fails then ask to discuss with the general manager or dealership principal. If you get nowhere with the dealer, then I suggest you take this up with VW UK customer service.
Hopefully that should at least get confirmation, without charge, of whether or not your car has had all the updates applied and then you can have any necessary discussions on how any outstanding updates should be dealt with.
Good luck, and do let us know how you get on. There are members of the forum who have extensive knowledge of consumer rights who may be able to assist/advise if you don't get satisfaction through my suggestions above.