We ordered some tiles for our bathroom in august (we ordered the amount our tiler said he needed for the job) and had a total of 7 boxes left over at a cost of £30 per box. We contacted the company in early September to request to send back the remaining tiles in sealed/unopened boxes for a refund (we knew we would need to pay return delivery). They have refused saying they can only offer refunds on full orders. Can they do this?