In high winds my neighbour used a ladder. The wind blew the ladder onto our conservatory roof causing damage. We told the neighbour who installed the conservatory and he agreed to go and buy the damaged parts from the company. He then came back stating the company does not do the parts. We contacted the company who confirmed that parts where available. They sent an engineer round to assess the damage. The quotation of £223, and for the company to replace the parts, was given to the neighbour. He refused to pay saying it was too much. We agreed that he could fit the parts if the parts was bought from the company who installed the conservatory. He agreed to this, the cost been £98. He is now stating that this is too much and he has got cheaper parts from a different company. We are stating this is not acceptable we want genuine parts from the original company. He stated they are too expensive. We have offered he pays us in two installments, £50 and £48 which he is still not agreeing to. Where do we stand