Calls several times a day. Any advice?

Stated she was an attorney for The Federal Legislation and would be serving an affidavit to my place of employment for 3 varying federal charges including theft.

This company/person called my cell phone several times in a mater of minutes. Then left two threatening messages. When I called the number back he claimed to be from a legal department stating that there was a law suit against me. He stated that I had taken out a payday loan and never paid it back. He also threatned to put a warrant for my arrest. I never heard of such company, and demanded for original documents of the law suit. He refused and said he did not have to supply the information again.

Called my cell and my work

Calls to my Cell phone. No one answers. Robocalls

calling too much

Harassment