Samsung Galaxy 4 LTE not actually an LTE. Limited functions in SA.

I bought a Samsung Galaxy Classic Watch 4 LTE at Cellucity in the mall. I went straight to Cell C with the new watch on the same day. I have done months of research and chose the LTE version, and paid more for it as I am often away from my phone. I have been with Cell C for years. All the Cell C, Cellucity, Vodacom, Telkom and Samsung consultants tried to help me set the eSIM/LTE function up, but no one could. I contacted a Samsung Technician (Tsogo) who says that the LTE phone has to be bought at the network provider that activates the eSim and it has to be activated at the time of purchase, before the watch is activated. That is the first I have ever heard / read that. Not even Cell C is aware of this. I even bought a new phone at Samsung on the day and had to trade in a Note 8 I was very happy with, as they thought the technology was not compatible. I also bought 2 new eSim vouchers (with different numbers to my cell??) that they were unable to use 😞 It means that the LTE function on any watch will never work if not bought at a network/cell provider (eg if bought on Takealot, Samsung etc)? And only certain network providers are capable of activating the eSim in the watch? So what outlets are able to sell and activate the watch if cell c is not able to? Frustrating because in all my months of research on the watch, this was never in any of the Samsung watch descriptions. This makes no technological sense to me. PLEASE HELP ME - HOW DO I ACTIVATE THE ESIM ON MY NEW GALAXY 4 CLASSIC LTE IF I AM WITH CELL C? And with the same number on my cell phone? If this is true, then I am extremely disappointed with Samsung, and the outlets that are network affiliated that sell this product. IT SHOULD BE MADE CLEAR IN ALL THE PRODUCT DESCRIPTIONS. Next time I will go the Apple route. The watch is also advertised to measure BP and other health parameters that it does not do. (also not in the product descriptions)