Payday loans

I got a message that some lady who left no name called and gave a case#. I called back the number left first the man said oh I have ni one asked what state I was tgen said my case is no longer with them. It had been sent to another location and niw I owed over 3000.00. He put me on hold and returned to adk for my ss# banking info. I adked that the resend this letter as I never received it. They had address but correct.  As I begin asking questions he states  your getting kind of strange my client is more important than you and hung up.  This is not good they almost got me asking questions is what ended my call.  They said I owed money from 2013.  I noticed just a few days prior I would get calls from unknown numbers and not pick up.