Not true. Think of the old "bed-sit" scenario where coin operated meters were used for gas / electricity on a room-by-room basis off the main house meters.I think that if you read the terms & conditions of your Esb or your fathers ESB agreement available on www.esb.ie, you are not allowed to resell electricity which is in fact what you would be doing if they were paying the bill. By disconnecting the supply you may be stopping illegal activiity on your own behalf