Of course there is only one side to the story here so I always have a cautious view of the posters 'truth'
Really need to check cars properly, take photos on inspection and if it were damaged walk away on the morning of the sale, not simply carry on and buy it. In my opinion they accepted the fault by doing that unless they got writtten proof it woudl be repaired/replaced.
Interestingly they were offered a second hand hard top free. As the last poster athe time of me writing this notes. I'd have grabbed that, purchased a soft top and had it fitted and still be in pocket. Of course ster clear of the County Court. Slow, slow, slow and you have to fight a powerful entity and the evidence is all verbal.