The Consumer Rights Act 2015 applies in Glasgow and across the UK. Goods should be of satisfactory quality, fit for purpose and as described, while services should be provided with reasonable care and skill. Depending on the problem and when it arose, you may be entitled to a repair, replacement, repeat service, price reduction or refund, although the appropriate remedy depends on the circumstances. Keep receipts, photographs and messages, then complain to the trader in writing; Advice Direct Scotland or a solicitor regulated by the Law Society of Scotland can explain your options if the dispute continues.