It's a spam, from an impersonator who claimed to work for Treasury department.
Here are some red flags:

- Calls were made on Veterans day ( Federal Holiday) No calls were usually made on Fed Holidays
- Calls were not made to any specific person ( They're hunting to see who will fall into this)
- Very heavy accent, most likely from overseas
- Calls traced back to "Magic Jack phone system"

NEVER fall into this
from G-man/woman