Пожалуйста помогите мне с сочинением.

Нужно написать сочинение по ситуации (не менее 150 слов):
You bought a stereo a shop recently, when you started using it you have found out that it is not working well. You have to contact to shop manager and ask then to give your money back.

You should write at least 150 words

Заранее спасибо