Three years ago, DS15 did a PADI diving course. Loved it, so we paid in advance for the advanced course with a discount. But he was unable to find a wetsuit warm enough (skinny) so we investigated drysuits. These were impossible to hire in his size so he postponed doing the advanced course until he could save up for his own. DS, now 18, just bought one (£650, he saved/earned the money himself) and so I asked the owner of the dive business if we could transfer the deposit paid for the advanced open water course to pay for the dry suit course. The dive shop has refused, and refused a refund of the £200 saying it was too long ago. Does anyone know how we stand legally? DH is livid and threatening to take it to the small claims court.