On Feb 12th and 14th , I received a call from Pakistan. So I googled the numbers and also "Pakistan call", and discovered that it's a scam operating out of Pakistan.
FYI "92" is Pakistan area code.
Luckily I know no Pakistani or Urdu.
I figured something was up when the last time they called, they called at 7AM!
My guess is, the previous owner of my phone number was South Asian.
Followup: on Feb. 14 I received another wrong number at 10:07 PM. Dunno how my phone number has gotten onto someone else's mail list.