I received three such phone calls before noon today.
The first was for $9,000 at #2026210948 - Code NB242
The second was for $7,000 at #2027381691 - Code PS0509
The third was (again) for $9,000 at #2022391377 - Code DJ183
I did not call any of the above numbers. Nor did I call Western Union. I just contacted this web site in the hopes of helping others.