When someone calls you about something you have no idea about - HANG UP.  You did not win a lottery you did not enter.  You are not going to be arrested for a debt no matter what anyone says.  No one is coming to your workplace.  Paying in advance for a loan is a scam 100% of the time and is illegal anyway.  If the person has an indian or pakistani accent it is a fraud every single time.  Your ducts are just fine.  You will not ever give out your banking information to anyone ever over the phone - EVER.  Simply, if you do not know who it is, HANG UP.