napisz dłuższy teks użytkowy list formalny odpowiednie rozpoczecie i zakończenie listu nie uzywamy skrutów jezyk formalny zwroty formalne na 120 /150 słow tresc obojentna

Customer Services Department Zenon Electronics London SW12 7OP Dear Sir or Madam , I am writing to complain about my mobile phone that I bought on 7th April from your website . It sometimes stops in the middle of a song . To make it start , I have to turn the mobile phone off and then turn it on again . And when I want to send a message , it switch off . I am returning the mobile phone to you with this letter. I would be grateful if you could repair the fault. If this is not possible , could you please send me a new mobile phone ? I look forward to hearing from you . Yours faithfully XYZ