well, it depends. How does it look now that it's potted up? Do the leaves on it droop and look transparent? if so , they've been frozen. If they look alright but a little droopy they'll probably be ok. Time will tell. Pot it in a well draining mix and put it in a warm sunny place. Water it in well and then don't water it again until the soil is fairly dry an inch below the surface.

The leaves are brownish-green and droopy. I'm sure they're frozen. But the stem isn't squishy. Will it sprout new leaves if the ones that are there are dead?

I've planted it in a pot, but I'm not sure that I've planted it deep enough. All the roots are under the soil, but there's about an inch and a half or two of...I don't know what it's called...sticking above the soil. Like an amaryllis bulb, I didn't submerge the whole thing. Is that right?

You just have to wait and see I had a Raja Puri that was
frozen to the side of the pot! But suprisingly in a month
it came back. If i was you i would still tell the sellers they knew not to ship that plant !