This number called us several times. We do not answer. They do not leave a message.

This number 773-290-8631 shows up on my caller id but it is to a gentleman named Anthony Young.  He has been after me for over a month saying that i committed credit card fraud and if i dont pay his client that i will go to jail.  What should i do, since i know that i haven't done the credit card fraud and the credit card that i did have was from 1998.  Someone please tell me what i should do.