Dear Sir or Madam, I am writing to ____ about an UltraFast modem that I recently bought from your ____.When it arrived, I ____ it to my PC, but it does not work. I cannot ____ the Internet or send e-mails.I am ____ the modem together with the ____. Could you please ____ the modem as soon as possible? I look forward to ____ from you. Yours faithfully

A letter of complaint modem

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