Broke down a mile from the dealership with major o...

Broke down a mile from the dealership with major over heating, had to wait 45 minutes for the tow truck. The engine cooled down and when the tow truck arrived he said we would be able to drive it there with him following. When I arrived at the dealership they said I couldn't have a hire car because I wasn't on the back of the tow truck. They also said I would be liable for all costs as I didn't have VW warranty ( I do have warranty it turns out they can't see uk warrantys). After some tense conversation with the maintenance representative he spoke to his manage and agreed I will get a free courtesy car, but would have to pay for the repair ( which I could claim back from VW uk, found out of my own accord). When I came to collect the car 3 days later ( on a Monday) they had charged me 270 for the courtesy car. I tried to tell the receptionist that it should be free as I had broken down and she just looked blankly at me saying " but you had the car for 3 days". At this point i had had enough and will take this up with higher management. I'm also astounded that as the engine had been in excess of 120 degrees they didn't change the oils whilst changing the cooling pump. ( I think I'm right in saying oil breaks down around 120 and becomes ineffective. Not the VW experience I expect