When I dialed the number back I heard a recording by Nationwide Credit. Don't have any business with them.

recieved a very unprofessional collection call from Nationwide Credit.Problem is,I have never had any business with them.They were actually asking me to pay a bill that a relative had.Can you believe it,they will do anything for money.The person actually hung up on me,I tried to call back and got a recording.I'm not sure if they are a fraud or what.

I have had several calls from them, and AMEX says they are the agency that has my old credit card bill.  I have to pay them in AZ.  Here's the thing, after endless phone calls even to my cell phone, and double checking this address in AZ with AMEX in FL.  I mailed a payment and it has come back to me.  THE NICE lady at the post office explained what it meant.  IT SAID "VACANT RETURN TO SENDER NO FORWARDING AVAILABLE"  basically the building is empty, so AZ mailed it back to me.  All that.  I actually would like to pay on my debt, that is the irony.  
aint no sucker-chicago

calls from INDIA and from ARIZONA
to collect on an old AMEX bill.  no one would send me a statement in the mail, no one wanted to give me an address either.  Also the last time the lady form india called me, I told her I mailed a payment to arizona why do you keep calling me?  she answered "I'll check on that"  and then she hung up.  today that payment came back to be basically THE BUILDING IS VACANT NOW

[***] refused to identify himself and hung up on me.