I mentioned the same thing via support email; if this were the exact same phone (pre-upgrade to 10 when i could still use twrp and other things) but with VoLTE, i’d have what i need (only by he g960f was affected if i recall, there were other S9 model numbers without the issue, but maybe those don’t work in the US?).
As it is i am under warranty, and the phone doesn’t work as a phone (and was disallowed as early as nov from calling won out issues, well before my warranty expired, despite the months it took to communicate about a return)b i expect to be made whole in the sense that the same phone working would be fine or (next best =>) enough money back to buy a comparable phone or (lastly =>) a phone they choose for me of comparable value.
Obviously comparable value is debatable given i got months and months of valuable usage, but i also expected it to be sold in good faith that it would last much more than just a year, i.e. amortisation is not near where expected.