I do not know who is calling...but they are calling me every 30 min. I do not pick up...

Irs scan  they call you with a restricted number first and about an hour later call you with a number that looks normal to you area...  I strongly suggest you do not answer call from numbers you do not know.  Let callers leave a message.. If they are legit, they will.   REMEMBER THE IRS DOES NTO MAKE CALLS OR ASK FOR INFORMATION OVER THE PHONE.   THE IRS ALWAYS COMMUNICATES BY MAIL.

Calls non stop but won't leave a message. Can't be legit