He had agreed a refund and was happy to accept that. Now the dealer is messing him about AGAIN. Why does this need constantly pointing out? The fact it's fixed now (according to the dealer) should only be relevant to the dealer, not to the person they have agreed to pay back. It means they can now happily resell their car and the OP can go buy one he is happier with, probably from a dealer who provide a better service and they probably made a good profit on his PX. Why wait to Monday to have another discussion with the dealer as well?
I am trying to wake him up, not abuse him, I want him to get what he is happy with. It's for the best.
I don't feel abused, don't worry
I'm perhaps not putting things across well. I have maintained that I would like a refund throughout but am not convinced of my position legally hence me not being too bold and ending up with a raw deal.
In respect of waiting until Monday, I did try to speak to the guy shortly after my post to confirm I didn't care that he thinks it is now fine and that I don't, pointing out the stress I've been caused by them suggesting it might have been my fault last week. I had assumed he wouldn't be back in until Monday but he is in tomorrow so I will be calling in the morning.
I have given it more thought tonight and even if I was offered a longer warranty, it is clearly not worth the paper it is written on as as soon as a problem was encountered with the car, they tried to put it on me.
Housey is probably right though, in so far as I need to assert my position more rather than worrying about whether my position is correct/incorrect. I don't want the car, they agreed to refund me and that should be that.