Anyone else having problem activating galaxy watch 4 as standalone?

So I just got two LTE galaxy watch 4's to use when I don't want to carry my phone with me (while exercising). After spending two hours at a T-Mobile store and another hour on the phone with a technician, they escalate and another tech comes on and advises me that the galaxy watch 4 cannot be used as a standalone on t mobile. It can only be used when connected and near the phone its paired with! WHY would T-Mobile sell an LTE watch that can only be used when connected to the phone? That is called a Bluetooth watch! Very frustrated with them wasting 3 hours of my time, when this could have been mentioned when the watches were ordered. And even then, why sell LTE watches instead of Bluetooth watches? Has anyone one had this issue?