Our bathroom fitter just called to say he broke the shower door during installation. He asked us to deduct it from his fee but i dont want to take money from him. He is a lovely guy and it may not be his fault. He mentioned that the door broke because it couldnt fit the tray and he was trying too hard. Could i ask for a refund or make a claim on the product guarantee? its a set from Victoria Plumbing. Any advice on how i should bring this up with customer service? thanks