I received a second notice from a law firm in XXXX alleging that I owe the XXXX XXXX # XXXX for non-payment of a road toll. In the second notice they say I did not respond to the first notice, when in fact I did respond to their first notice. In my written response I told them the debt was not mine and explained why I did not think so. I also called the collectors to explain but they insisted that I provide proof. 

Do I have the burden of proving their allegations are false before they will stop their proceedings? I live in the XXXX XXXX XXXX XXXX. This is a toll for a roadway near XXXX. No car I own has been close to it. 
