Contract and Commercial Law Act 2017, ss 195, 196

If the goods are faulty, you may have a right to compensation or to a full refund. This depends on how serious the problem is. If you’re entitled to a refund, you should get the money back in cash, and you don’t have to accept a credit note. If you prefer, you can choose to accept a replacement or repair instead of a refund or compensation.

If you’re not happy with the seller’s response, you can take them to the Disputes Tribunal (see the chapter “The Disputes Tribunal”).