called my cell about debt??

It's a collection agency called Global International.  
They have a website for consumers that are getting called:
http://www.globalcollection.net/Consumers.aspx

Collection Agency

I have faxed them, I have answered their calls and told them no one lived here they were looking for I am even receiving mail from Global for the person they are looking for. they do not stop. very annoying and when you do answer no one there you have to leave a message.

This number calls me 4 times a day, asking for someone who does not live here. I've tried getting a hold of them with the number they use to call me, and two numbers on their website but I can never get through. I either get disconnected right away, or I'm told to leave a message for an inbox that is full.