Kontrola úkolu z ANJ

Zdravím, chtěl bych vás poprosit o kontrolu a opravu domácího úkolu z ANJ, abych dostal alespoň jednu dobrou známku z tohoto předmětu. Takže, jedná se o napsání reklamace na produkt, který přestal fungovat. Díky moc pokud to přečtete a napíšete, co bych měl opravit. Zadání: 1. Say when and how you bought the product 2. Describe the problem in detail 3. Explain that you want a replacement and ask what will you need to do.
Moje práce (mimochodem to má být na cca 120 slov, tzn. nic moc tam dopisovat nechci) :
Dear Sir/Madam,
I bought your product, Its MP3 player, which name is Siper Sound 6782 digital music player. I bought it two or three weeks before at an your online shop.
But, three days ago it appeared problem. The product doesnt work properly, despite that, I carefuly followed all the instructions for use and any damage is definitly not my fault. I want to describe the products problem. I turn on the device, but it nothing happens.
Because, I was satisfied, when the device working, so i dont wanna to send money back. I would be gratuful if you could send a replacement for this faulty product.
Your faithfully,
ssss