The demand is from the electricity company E.oN UK. It is from Pastdue Credit solutions givin him until 18th July to pay in full. He tells me that they never received a bill in the four months they were tenants there. I presume the landlady kept the £600 for wear and tear and didnt in fact pay any bills with it. She was not happy that they were leaving but they felt unsafe there and just wanted out of the property. I presume they are liable for the debt and I am going to write to the debt agency asking for details of the debt and the dates etc, would that be the correct thing to do. Also just as a matter of interest the letter is addressed incorrectly . My son is Mark Tierney, and its addressed to Mark Pierney. He is now in Edinburgh and this debt relates to Gourock, Glasgow. Where would they have gotten his address ?? Council tax ?? Thanks for your assistance.