Tricky one.......if it was purely done over the phone and you didn’t record the conversation....which why should you.....how do you prove anything?
I was gazuumped by a well known dealer a few years ago. NOT a Morgan dealer I hasten to add. Agreed that I’d have the car on Saturday, said I’d arrange for funds for the deposit on Monday only to arrive on Monday to be told it had been sold later on Saturday! I was not amused and they lost my business.