Dear Sir/Madam, I am writing to complain about a camera that I bought from your store last week. At first, it worked normally, but after only a few days, it suddenly stopped working. The camera will not turn on, even when it is fully charged, and the screen remains completely black. I have tried restarting it several times, but nothing has changed. I am very disappointed because I needed this camera for an important event. I would like to request either a full refund or a replacement with a new, working product. I have attached the receipt and some photos for your reference. I hope the issue can be resolved as soon as possible. Thank you for your attention. Sincerely,