We purchased the Samsung French door fridge with the "snack drawer" above the freezer, and I had the exact same problem!! It sounded like a truck idling in my kitchen. It only bothered me; the kids and dh weren't bothered at all. I tried to adapt, I really did, but in the end I had to return the fridge to save my sanity.
We purchased a Kenmore French door fridge to replace the Samsung (no snack drawer, but we don't miss it) and it is so much quieter!!! Don't get me wrong, it still makes some humming noises, but NOTHING like the Samsung.
I hope your fridge settles down to an acceptable level; it is really no fun to live with a noise like that.