If you KNOW you owe no money, or believe the call was from a fake debt collector, please take the time to read this:
http://www.consumer.ftc.gov/articles/0258-fake-debt-collectors
I Have received 6 calls to a pre-paid cell phone from this number. I know the calls are not for me as I do not live in the US. It cost me $2.00 per day when they call. I ask them to remove my number lets see if they do.
One time they say it is for a clam and the next is check fraud, they should keep a record.
I have received several calls from this number and another number stating I will be served with papers and something about fraud. This happened several thimes last year also.