I purchased a bangle with payment and delivery details sent straight away. The buyer messaged me to say the bangle had damage not specified in the listing which I replied thank you for letting me know and I'd like to continue with the sale. Seller is demanding bank details for refund because he doesn't want to send the damaged bangle. Am I being unreasonable in thinking this isn't right and if i accept the broken attachment there should be no reason for the seller not to continue with the sale?