Hi,
This is my first post but from my own personal experience, I refused to drive back 2 hours to and fro to the lexus dealership and they agreed to collect the car and gave me a 21 plate NX 300h courtesy car for the 2 days my car was in their workshop.
I purchased a 2015 RX 450h back in June and the air conditioning was blowing warm air.
Let the dealership collect the car when they can and request for a courtesy car. I believe you have 14 days to reject the car if you are not happy with the purchase or the whole dealer experience.
Hope you get it sorted soon.