Start with official guidance from GOV.UK or Citizens Advice, and remember your rights are usually against the retailer, not the manufacturer, under the Consumer Rights Act 2015. You may have a short-term right to reject faulty goods for a refund within 30 days, although other remedies such as repair or replacement may apply depending on the circumstances. Unofficial forums and social media can be useful for ideas, but they may be outdated or miss important details, so check any claim against an authoritative source. If the retailer disputes your position or the issue is complex, consider advice from a consumer organisation or a solicitor regulated by the SRA.