stop calling my cell phone

Didn't answer because I didn't know who it was.

Stated they are from the ADR Firm

Called me as well threatening lawsuit and wanting to confirm my personal info, stating that I hadn't paid back a payday loan which I never received or authorized, asked if I wanted to settle over the phone or defend myself, used the name Mike... Believe this is a single male and female team as the original message came from the female but I could hear the male in background yelling at someone else. I asked for the callers credentials and he yelled that I was the one in trouble here not him. What can we do to stop this harrassment?

Warning. This is a fraud call. They steal your credit card number. Warning

Constant, incessant, continuous calls all day...put an end to this shit!!!