Exactly, they told me that exact same thing 1 year ago after I purchased a Galaxy Watch 3.... Get your money back and buy something that has what it advertises.
Return it & get a Huawei Watch 3. Best decision you will ever make on a smartwatch. I had the same problem with my Galaxy watch 3, which I bought a year ago. Now I can't even give it away, let alone sell it.
I have the same problem, no ECG, SPO2, or Blood pressure monitoring on my Galaxy Watch 3. A year down the line & nothing has changed. Promises from Samsung on updates never materialized. They are completely useless. Just purchased the new Huawei Watc...