Half of the screen gets too dark i called customer service to reserve an appointment. First the didn't call me to define the date. I called them again and they advised that the maintenance team will come in Wednesday Aug 4 i came very early from my work but they never show up. I called customer service in the next day and they confirmed that the maintenance team will come today. But they didn't show up again!!! Today I started to call them from 10 AM and they keep confirming that they will come but they didn't show up.. can you believe that.. this is samsung egypt .. I'll never buy any Samsung products again Ahmed shahin