Samsung TV Satellite Update Cuts Audio Across All Channels

For about a week, I have been experiencing a major broadcast issue on my Samsung TV (model UE55DU7000UXTK ss5) following a satellite update. At first, the Habertürk channel completely vanished; now, while the video is back on Habertürk, there is no audio. Similarly, all other channels display video but have no sound. I bought this TV last summer from MediaMarkt for my vacation home in Bodrum, and I am confident this issue is entirely software/update-related.

I have repeatedly checked every available setting on the TV to fix the problem, trying steps like re-scanning for channels, performing a factory reset, and spending hours following AI troubleshooting guides. Despite these efforts, nothing worked. When I spoke with MediaMarkt, they advised me that this matter can only be resolved by Samsung.

I demand that Samsung fix this sound and channel glitch—caused by their satellite/channel update—via a new software update or remote troubleshooting, fully resolving the audio loss across all channels, including Habertürk. I request that my issue be resolved as quickly as possible.