Надо написать лист-скаргу на английском! Купил нерабочий чайник примерно так.

Dear, director of the shop "название"

Yesterday, I bought in your shop an electric kettle. It was cost 35$ for me. When I came home, I saw that it was any instructions in the box. Then, I plugged in the kettle and went to change clothes, I heard a strange smell that spread very quickly. When I came to the kitchen I was surprised! Your kettle was sparkling! It is terrible! I require that you give me the full amount for my purchase!