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Dear sirs! Dear managers! My name is Ivan Korolev. On the 3rd of December I bought an mp3 at your central shop. The problem is that after some days it doesn't work correctly. Sometimes I can't switch it on and sometimes I can't switch it off. The sound is terrible. The quick dance music becomes very slow. And slow music becomes very quickly. I ask you to replace this mp3 or refund the whole sum. With hope for your undestanding and honesty! Ivan Korolev.