Contact the seller and make it known this is going back if they or Samsung can't correct this inside the return period. Otherwise folk can get stuck with these things.
Samsung might beg off they don't write the app (Microsoft owns Skype today) but app failures are pretty common. Use your strength while you can.
Bob
I have just bought a Samsung Curved TV with an inbuilt webcam. The first time I tried using Skype on the tv the sound cut off after a few seconds. The person at the other end of the call could hear me perfectly but I couldn't hear anything. The problem doesn't seem to have come from the other end of the call as I managed to hear them when using my tablet.

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