If goods are faulty, not as described or not fit for purpose, you normally have a short-term right to reject them and request a full refund within 30 days of delivery. After 30 days, you usually need to give the retailer an opportunity to repair or replace the item, although they may refuse your preferred option if it would be disproportionately costly. If that remedy fails, takes too long or causes significant inconvenience, you may be able to request a price reduction or reject the goods for a refund, which can sometimes be reduced to reflect use. The outcome depends on the circumstances, so check the guidance on GOV.UK if the retailer disputes your rights.