I think I can help a bit. We have the same fridge (of course) and it did the same thing.
Tech came out, tried to dismiss it, but DH is persistent. He had recorded the head-splitting whine, and insisted it was not normal. The tech looked i bit further into the wiring ~ and found two wires touching. Harmonic Interference. The solution? Separate the wires.
I don't know if it is true, but my neighbor tells me if they make three visits for the same complaint and can't fix it, they'll bring you a new appliance.
Hope this helps!
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