Goods misdescribed or not as advertised

Typical aim: Refund or price reduction
Be specific: dates, times, order numbers, names, promises made, and the resolution you want.
We’ll reference:
Acts & laws: Consumer Rights Act 2015 (as described); Consumer Protection from Unfair Trading Regulations 2008
Ombudsman/Regulator: Trading Standards (via local authority)
Guidance: https://www.gov.uk/consumer-protection-rights