电脑故障致歉信：免费维修服务

Dear Mary,

I am writing to apologize for the inconvenience caused to you due to the malfunctioning of the computer you recently purchased from us. I understand that the computer is experiencing frequent crashes and is unable to connect to the internet.

After investigating the issue, we have discovered that the problem is due to improper handling and operation of the computer. We would like to sincerely apologize for any frustration or inconvenience this may have caused you.

We would like to invite you to bring the computer to our after-sales service department, where our trained technicians will be able to provide you with a free repair service. We have reserved an appointment for you at 2:30 pm tomorrow afternoon, and we hope that this will be a convenient time for you.

Once again, please accept our apologies for any problems you have been experiencing with your computer. We hope to regain your trust and confidence in our products and services.

Sincerely,

Robert