Dear Phone Company,
Not only did Mr. Patrick Owen Doors give you a fake number (mine) but he also gave you a fake name. While I have come to enjoy the brief chats with your various Customer Service Agents for the past few weeks concerning this matter, I will have to ask that you stop now. I will, of course, pass on your urgent message for Mr. Paddy O' Doors concerning his account status, but one would assume that not being real might hinder his ability to be concerned about tangible real-world matters such as telephone bills and account statuses.
P.S : Same goes for his wife, Patricia.