Prosze o sprawdzenie

Prosze o sprawdzenie i poprawienie bledow.

Dear Sir or Madam,
I am writing to complain about a Mp3 player that J bought in yours Internet shop on 17 January. I want to express my strong dissatisfaction with method whith I was treating. When J got the packet and opened it, I was not a earphones for this Mp3 player. In addition turned out that this Mp3 player is not working. I went with then to the specjalist and he told me that it is broken and this defect is subjest to guarantee. I would therefore be gratefull if you could consider a fi\ull refund of 60Ł. If I will not be possible I hope you will the faulty Mp3 player. I look forward to hearing from you in the near future.
Yours faithfully
XYZ

.. Mp3 player that I bought in YOUR Internet shop on 17 January. I want to express my strong dissatisfaction with THE 'method' (moze lepiej way) THAT I was treatED.. ...'I was not a earphones' (cos tu nie tak, lepiej there were no earphones) for this Mp3 player. In addition IT turned out that this Mp3 player is not working. I went with IT to the specialist and he told me that it is broken and this defect is subjeCt to guarantee.
..could consider a fULL refund of 60Ł. If 'I will' THAT WOULD NOT BE possible I hope THAT you will REPAIR the faulty Mp3 player.