The Consumer Rights Act 2015 generally protects consumers, including young adults, when they buy goods, services or digital content from a trader. Goods should be of satisfactory quality, fit for purpose and as described; depending on the circumstances, you may have rights to a repair, replacement, price reduction or refund. If you are under 18, whether a contract can be enforced may depend on the type of purchase and your circumstances. Keep receipts and messages, contact the trader first, and check GOV.UK or Citizens Advice for guidance on your situation.