Why this answer
What actually matters
- If a specific defect was clearly disclosed and the reduced price reflected it, you generally cannot later complain that the disclosed defect makes the item non-conforming.
- An unrelated fault is different.
- A shop may have a more restrictive voluntary change-of-mind policy for sale items, but that is not the same as faulty-goods rights.
What you could say
Keep the response tied to the actual rule.
Evidence
What to have beside you
- Proof of purchase or another record linking the transaction to the trader
- Photos/video of the fault and when it appeared
- The product description, advert or specification
- The trader’s written refusal and the remedy already offered
If they still refuse
Move the dispute forward.
- Ask the trader to treat the issue as a statutory-rights complaint rather than a voluntary returns request.
- Preserve the refusal. Depending on payment method and value, Section 75 or chargeback may be relevant.
- If necessary, consider ADR or a county court claim after the appropriate pre-action steps.
Read the full rules