how to make a complaint

faulty goods - produtos com defeito - sample letter at http://www.peterborough.gov.uk/pdf/bus-trading-standards-consumer-toolkit-sampleletters.pdf or http://www.which.co.uk/advice/dealing-with-faulty-goods/sample-letters/index.jsp

how to complain - step by step at http://www.which.co.uk/advice/dealing-with-faulty-goods/sample-letters/index.jsp

You can also check this website: http://www.consumerdirect.gov.uk/after_you_buy/making-complaint/