Under the Consumer Rights Act 2015, faulty goods should be of satisfactory quality, fit for purpose and as described. If you reject them within 30 days, you can usually choose a refund, although some exceptions apply; after that, the retailer can generally offer a repair or replacement first. If a repair or replacement is unsuccessful, or is not provided within a reasonable time and without significant inconvenience, you may be able to request a price reduction or refund. Contact the retailer, rather than the manufacturer, and keep your receipt and evidence of the fault; Citizens Advice or a solicitor can explain your position if there is a dispute.