Just got a call from this number with the same description as "Nerol" gives: says something about "the post office hiring now" "the job line" and giving the number "976-4477" (with no area code)
I've put them on my blocked list, so I don't expect to hear from them again.
I just received the same call as the others about jobs being offered at city/state/federal levels also for the post office-- I work for the PO and there is no such number for applying. This is definately a scam!