I have accepted a return of item as the buyer described the item as not working. The machine arrived back with me and works perfectly fine and they have also used the descaler that comes with the kit. EBay are now insisting I refund the buyer. Once I refund the buyer I will have lost money due to the return label, having to buy more descaler and loss of selling to a genuine buyer. Do I have to refund the buyer. EBay said if not done in 2 days they will take the money themselves and refund