I advertised a 16-year-old 7.5ton horse lorry on horsemart, stating the true mileage, 5 photographs and the fact that it was professionally maintained, even giving the name of the garage where it was maintained. The lorry was also advertised with the correct road tax date and MOT validity. I received an email offer for £8000 pounds which I accepted and the buyer was going to pay a deposit of £2000, only paid £800 in the end a full week after agreeing the deal by bank transfer without seeing or testing the vehicle. I sent an email to say that the £2000 deposit was refundable only if the lorry was fundamentally misrepresented (didnt send anything relating to the £800 deposit). When the man came to pay the balance prior to taking the lorry away, he said he changed his mind due to an alleged phone message from the garage (I never got to hear what that message said) because apparently the garage advised him against buying the lorry because it would cost him a lot of money to maintain. When I pressed the buyer to tell me what was allegedly wrong with it, he said that he didn't know but he had changed his mind and didnt want to buy the vehicle any more. He got in his car and drove off. A few days later I received first a telephone call, then an email asking for the deposit back where he threatened me with the small claims court because I had fundamentally misrepresented the lorry. The court forms have now arrived, what do I put in there, as clearly he broke his commitment to buy?