My husband bought a used car on Friday. he bought it for Autotrader online. We noticed some problems straight away it has a new door and cracked trim etc. Usually we would do a car history search but on this occasion dh knew better(grrr). It turns out it is a cat d write off. The seller hasn't deleted his ad either and has altered it to include this information. He says he is covered by this. We don't want it of course dh has been round and has been told that the registration document has been posted, dh has to ring the dvla to get it returned unaltered to the seller and then he will refund us and take the car back. I am very doubtful this is going to happen. What can we do to ensure it does?